[HN Gopher] Artemis II crew take "spectacular" image of Earth
       ___________________________________________________________________
        
       Artemis II crew take "spectacular" image of Earth
        
       https://www.nasa.gov/image-detail/fd02_for-pao/
        
       Author : andsoitis
       Score  : 1012 points
       Date   : 2026-04-03 19:35 UTC (1 days ago)
        
 (HTM) web link (www.bbc.com)
 (TXT) w3m dump (www.bbc.com)
        
       | damnitbuilds wrote:
       | Anyone find the full res version of this ?
       | 
       | Nasa images page is useless. Government work.
        
         | matteason wrote:
         | They're here: https://www.nasa.gov/gallery/journey-to-the-moon/
         | 
         | Direct link to this image: https://www.nasa.gov/wp-
         | content/uploads/2026/04/art002e00019...
        
           | mbauman wrote:
           | That version is ~~brightened significantly~~ (edit) a longer
           | exposure; I like the darker one better.
           | 
           | https://www.nasa.gov/image-detail/amf-art002e000193/
        
             | Sharlin wrote:
             | They're two separate photos, just taken at different
             | exposure settings.
        
               | mbauman wrote:
               | Sure enough, thanks for the correction!
        
         | Jordan-117 wrote:
         | "I cannot immediately find a photo on a website, therefore I
         | will denigrate the agency that sent people into OUTER SPACE to
         | make these incredible images possible."
        
         | sgt wrote:
         | I don't understand why media, such as BBC, keep uploading
         | heavily compressed versions of photos that could be beautiful.
         | The original has grain, sure but that's not a problem. The BBC
         | version is horrific. Are they trying to save on bandwidth in
         | 2026?
        
           | pndy wrote:
           | If the content loads fast, more views are given and more data
           | is collected.
           | 
           | My uBo caught 6 elements, Privacy Possum got referer headers
           | blocked from 28 sources
        
           | BHSPitMonkey wrote:
           | It's highly reasonable for them to limit image size/quality
           | to whatever looks fine to 98% of their readers. They store
           | and serve an absolute ton of ever-changing content to
           | browsers/apps; The very small (and likely revenue-negative)
           | contingent of highly motivated people can find the originals
           | if the images are especially noteworthy like these.
        
       | sandworm101 wrote:
       | Come on flat-earthers. I know you are out there. Lets hear your
       | crazy rant about how this is a fisheye lens on a weather balloon
       | or a webcam atop the eiffel tower. Why can't we see the poles?
       | And is that an ice wall on poking up in the lower-right quadrant
       | of the disk?
        
         | layer8 wrote:
         | Don't you see the reflection of the studio lighting in the
         | middle?
        
           | geldedus wrote:
           | of course they are sore losers
        
         | itsalwaysthem wrote:
         | Flat Earth is a distraction or a way to ridicule any counter-
         | narrative to anything scientific.
         | 
         | When a cosmologist says that a planet nobody can see exists and
         | is made of x% helium and is y light years away etc etc with
         | absolute certainty despite nobody being able to go there and
         | witness any of it (look how wrong they were about Pluto's
         | appearance), then you can always just say "what are you a Flat
         | Earther" and easily discredit any doubt I have in these
         | extraordinary claims with underwhelming evidence.
         | 
         | Any idea you want the public to oppose, you can create and
         | market an adjacent thing, like Trump. You can throw all the
         | ideas you want to oppose in the Trump bucket and if anyone
         | supports it it's probably because they're a Trump supporter
         | right?
         | 
         | See you're very very easily programmed, like clockwork.
        
           | kube-system wrote:
           | > a planet nobody can see exists and is made of x% helium and
           | is y light years away etc etc
           | 
           | Yeah, because this is high-school curriculum.
           | 
           | https://www.jpl.nasa.gov/edu/resources/lesson-plan/using-
           | lig...
           | 
           | > with absolute certainty
           | 
           | It is taught that the scientific method provides evidence,
           | not certainty, in middle school science curriculum.
        
             | TeMPOraL wrote:
             | > _It is taught that the scientific method provides
             | evidence, not certainty, in middle school science
             | curriculum._
             | 
             | FWIW, this fact isn't taught properly or normies are
             | somehow unable to process it.
             | 
             | There's this popular dismissal of tech people, saying that
             | "they think in 0s and 1s, but world is shades of gray", but
             | in reality, it's almost everyone else that thinks in 0s and
             | 1s - STEM people and people in/into similar fields (like
             | medicine) are usually forced to understand nuance due to
             | nature of their interests/occupation, but everyone else
             | seems to operate in purely binary mode, and what's worse,
             | whether something is true and false isn't even correlated
             | much with objective reality, and mostly with one's personal
             | feelings about how things should be.
             | 
             | (Now, to be an equal opportunity cynic, in my experience,
             | the concept of categories and taxonomies being arbitrary -
             | invented and assigned by people, and judged by their
             | usefulness, as opposed to being inherent facts of nature
             | that are discovered - seems to be hard for even STEM people
             | to process, for some reason, at least based on my
             | observations and the number of conversations I had about
             | this with all kinds of people.)
        
           | wat10000 wrote:
           | Do you believe in Antarctica?
        
           | adrian_b wrote:
           | I do not know what you mean about "how wrong they were about
           | Pluto's appearance".
           | 
           | Since when I was very young and until now the amount of
           | information about Pluto has continuously increased, so now we
           | know much more about it.
           | 
           | For example now we know that Pluto is practically a double
           | planet, having a relatively very large satellite. This was
           | not known when I was a child, e.g. at the time of the first
           | NASA Moon missions.
           | 
           | However, I do not remember anything wrong. Many things that
           | have been learned recently were previously unknown, not
           | wrong.
           | 
           | If you refer to the fact that Pluto was reclassified as a
           | dwarf planet, that is also a case of information previously
           | unknown, not wrong.
           | 
           | This planetary reclassification was not the first.
           | 
           | When Ceres was discovered in 1801, it was considered the 7th
           | planet, after the 5 planets known in antiquity and Uranus
           | that was discovered a few years earlier. (The chemical
           | elements uranium and cerium, which were discovered soon after
           | the planets, were named so after the new planets, as their
           | discovery impressed a lot the people of those times.)
           | 
           | However, soon after Ceres a great number of other bodies were
           | discovered in the same region and it was understood that
           | Ceres is not a single planet, but a member of the asteroid
           | belt.
           | 
           | Exactly the same thing happened with Pluto, but because of
           | its distance, more years have passed until a great number of
           | bodies have been discovered beyond Neptune and it became
           | understood that Pluto is just one of them, i.e. a member of
           | the Kuiper belt, so it was reclassified, exactly like Ceres.
        
           | maxbond wrote:
           | > ...discredit any doubt I have in these extraordinary claims
           | with underwhelming evidence.
           | 
           | Something unfortunate about our media environment is that
           | science news is a dumbed down summary of a dumbed down
           | summary of a dumbed down summary. These issues you're
           | flagging, a lack of evidence and overstated certainty -
           | they're an artifact of the reporting process. If you work
           | your way back to the original sources, there will be a heck
           | of a lot of evidence and it will carry error bars (so the
           | certainty is precisely & appropriately stated). There's bad
           | or even fraudulent papers out there but there's a huge amount
           | of good science being done by honest researchers who are just
           | as concerned as you are about the quality of the evidence and
           | the degree of certainty.
           | 
           | Eg, there really is a compelling explanation of how we can
           | know the composition of a gas giant light-years away, and it
           | isn't invented out of thin air, it's been 100+ year process
           | of understanding spectroscopy and cosmology, building better
           | telescopes, etc. It's the culmination of generations of
           | scientists pushing the field forward millimeter by
           | millimeter.
        
           | chrisnight wrote:
           | Your argument is against large generalizations and straw man
           | arguments, and to prove it, you.. use a generalization and
           | straw man argument?
        
         | jgrahamc wrote:
         | There is no point engaging in any way with people who believe
         | in such "theories". They are like trolls, the only way to deal
         | with them is not at all. Don't engage, don't disagree, just
         | nothing, total silence. One can choose to be a wilful edit and
         | waste your life and time on complete bullshit, but the rest of
         | us should just ignore those people completely.
        
           | sandworm101 wrote:
           | Ya, but eventually they all wind up wearing furs and carrying
           | spears as they storm the gates of some government building.
           | Its all good fun until people start to die. We laugh as
           | soveriegn citizens are yanked from thier cars. Harder to
           | watch are the vids of them pulling guns on police.
           | 
           | Conspiracy theorists need to be kept in check. Disengagment
           | is easy but it doesnt help.
        
         | simonw wrote:
         | This was a fantastic YouTube video on flat earther beliefs from
         | a few years ago: https://www.youtube.com/watch?v=JTfhYyTuT44
         | 
         | Spoiler - they mostly switched to QAnon instead.
        
         | YZF wrote:
         | "How to Talk to a Science Denier: Conversations with Flat
         | Earthers, Climate Deniers, and Others Who Defy Reason"
         | 
         | https://www.amazon.ca/How-Talk-Science-Denier-Conversations/...
        
           | brendoelfrendo wrote:
           | Ridicule them until they leave? Don't really feel like
           | wasting my time on any more than that.
        
             | majkinetor wrote:
             | Exactly what Professor Dave does.
        
         | slopinthebag wrote:
         | The only real difference between the "spaceflight" in the
         | 1960's and today is that these pictures don't need to be hand
         | painted - you can render them in Blender in a single day.
         | 
         | But yeah, sure. With the amount of fake stuff on the internet
         | including AI image generation, we're expected to believe that
         | the US government dumped billions of dollars into going to
         | space when they could give the appearance of doing so for a few
         | bucks in nano banana credits? Hah.
        
           | maxbond wrote:
           | They couldn't do that for "a few bucks of nano banana
           | credits" though. You could generate the imagery but that's
           | only one line of evidence. A launch is easily detectable
           | through multiple signals.
           | 
           | Why would Russia and China and any other country with any
           | degree of astronomic capability that the US has an
           | adversarial relationship with just let them get away with
           | lying to the world? Why wouldn't they take the opportunity to
           | humiliate the US by revealing that no launch happened and
           | that they cannot detect the spacecraft?
        
             | slopinthebag wrote:
             | How would they prove that no launch happened? There isn't
             | conclusive evidence of an absence of launch, and if there
             | were it would be accused as being fake and a ploy from
             | American enemies to discredit them.
        
               | maxbond wrote:
               | > There isn't conclusive evidence of an absence of
               | launch, ...
               | 
               | A launch is detectable seismically, visually, on radar,
               | etc. There's a lot of investment in being able to detect
               | launches (to detect the launch of nuclear weapons). It
               | would be screamingly obvious if the launch was fake. It
               | would absolutely be conclusive if there were no seismic
               | activity, no radar return, they couldn't detect the
               | spacecraft presently, etc. At least for a definition of
               | "conclusive" that can be operationalized - conclusiveness
               | is a judgement call about when evidence is sufficient and
               | not reaching some theoretical 100% certainty. Which can't
               | possibly be reached for any claim for the reason you
               | outlined; you can always invent some negative
               | counterclaim that can't be entirely dismissed, even for
               | claims like "the sky is blue".
               | 
               | It's also pretty easy to find people who were physically
               | there to witness the launch. This wasn't a secret bunker
               | or a barge in the middle of the ocean. It was in Florida
               | in the late afternoon.
               | 
               | > ...it would be accused as being fake and a ploy from
               | American enemies to discredit them.
               | 
               | Hundreds of thousands of people around the world have
               | access to this data. Astronomers, geologists, petroleum
               | engineers, backyard amateurs. The conspirators could
               | muddy the waters but they couldn't ultimately prevail. It
               | is many orders of magnitude easier to go to the moon than
               | to convincingly fake it.
        
               | icehawk wrote:
               | > and if there were it would be accused as being fake and
               | a ploy from American enemies to discredit them.
               | 
               | Yeah so, the soviets were pretty good at dodging things
               | like that:
               | 
               | https://en.wikipedia.org/wiki/1960_U-2_incident
        
           | mylies43 wrote:
           | Im curious, so the rocket definitely took off, where did it
           | go?
        
         | christophilus wrote:
         | My guess is the answer is: We didn't really launch Artemis.
         | This is all CG.
        
           | NitpickLawyer wrote:
           | > This is all CG.
           | 
           | Reminds me of the classic - It is true that Spielberg filmed
           | the moon landings, but he was such a perfectionist that he
           | wanted to shoot on location.
        
             | dylan604 wrote:
             | ahem, Kubrik
        
               | saint_yossarian wrote:
               | Kubrick, even.
        
             | TeMPOraL wrote:
             | And here I thought it was all shoot on soundstage on Mars.
        
         | _adq2 wrote:
         | Don't pay attention to "authorities," think for yourself.
         | 
         | - Feynman
        
         | gaurangt wrote:
         | Oh, wait, in addition to their usual conspiracy theories, now
         | they can also claim that this is AI-generated!
        
       | MiscIdeaMaker99 wrote:
       | What a gorgeous sight to behold!
        
       | Sharlin wrote:
       | I was confused when I first saw this photo, as I don't think I've
       | ever before seen a nightside, moonlit Earth, exposed so that it
       | looks like the dayside at a first glance. I wonder how many
       | casual viewers actually realize it's the night side. A nice
       | demonstration of how moonlight is pretty much exactly like
       | sunlight, just much much dimmer. In particular it has the same
       | color, even though moonlight is often thought of as bluish and
       | sunlight as yellowish!
        
         | layer8 wrote:
         | It explains why the image is so grainy. At first I was confused
         | what that stripe to the left and the bottom was. But it's just
         | the window edge, and the noise isn't stars.
        
           | Sharlin wrote:
           | (To be clear, the bright dots _are_ stars [except the
           | brightest one, in the lower right, is Venus I think], which
           | makes this photo also a great demonstration that of course
           | you can capture stars in space, you just have to expose
           | properly!)
        
             | MarkusQ wrote:
             | How do you know that they're stars? I believe they probably
             | are stars as well (by visual comparison with a star chart,
             | suitably rotated), but I've found no source for either
             | claim.
             | 
             | I did find multiple sources, including TFA, for the
             | brightest being Venus.
        
               | Sharlin wrote:
               | They're much brighter than the noise floor. Photographic
               | noise doesn't really have such outliers.
        
               | dylan604 wrote:
               | Why would you think they are _not_ stars? Not really sure
               | the confusion on the matter. Are we leaning towards this
               | being shot from a soundstage?
        
             | MarkusQ wrote:
             | Just answered my own question to my satisfaction; they are
             | stars.
             | 
             | The same specs, which match star charts, show up in two
             | images taken a few moments apart at different exposures
             | (links were given down-thread).
        
             | dylan604 wrote:
             | Who said you can't capture stars in space? What do you
             | think the purpose of Hubble, JWST, etc are? There's also
             | plenty of imagery taken from ISS that clearly show stars.
             | I've definitely seen Orion in some of that imagery and it
             | put a different perspective on the size of the
             | constellations when seen from that angle.
        
               | smallerize wrote:
               | Photos from the moon landings don't have stars in them,
               | because they are exposed for full daylight on the moon.
        
               | xp84 wrote:
               | I'm assuming the people who complain that there aren't
               | stars are the "moon landing faked" crowd... it's
               | hilarious to me that they think this vast conspiracy came
               | together to fake that whole thing, and that they
               | literally forgot to put a bunch of tiny 25-cent
               | flashlight bulbs up poking through the black backdrop on
               | the sound stage. Like, no one thought about the stars, or
               | they couldn't figure out how to do those "special
               | effects" and just prayed no one would spot the error.
        
               | Sharlin wrote:
               | I referred to the common question (or accusation) of why
               | there are no stars in, say, the Apollo photos taken on
               | the moon. The answer is, of course, that you can't see
               | stars if you're exposing for something bright and sunlit,
               | like the day side of Earth, or the lunar surface.
        
               | GorbachevyChase wrote:
               | Of course. But they are not visible in the Chang'e photos
               | on the dark side either. I think in the interview of the
               | astronauts following the first Apollo Mission, a reporter
               | asked for a confirmation that the stars were not visible
               | because of "the glare" (an interesting question in
               | itself). The explanation given was that the stars were
               | not visible with the eye, but were visible with "the
               | optics".
        
           | MarkusQ wrote:
           | Well one of them is obviously Venus. How did you determine
           | the others weren't stars?
        
             | layer8 wrote:
             | I'm talking about the grainy noise over all the black parts
             | (actually over the Earth disk as well), including beyond
             | the window edge. The window edge itself looks like a denser
             | and brighter stripe of stars.
             | 
             | Zoom into this higher-resolution version:
             | https://www.nasa.gov/wp-
             | content/uploads/2026/04/art002e00019...
        
               | Sharlin wrote:
               | Yep, that's definitely noise.
        
         | madaxe_again wrote:
         | It's a remarkable photo. You can see the aurora Australis at
         | the top right of the image (it's upside down, if there is such
         | a thing - that's the straits of Gibraltar at the lower left,
         | and the Sahara above it - and the skein of atmosphere wrapping
         | the entire planet. Those look like noctilucent clouds in the
         | north, or possibly more aurora.
        
           | Sharlin wrote:
           | It really is gorgeous. You can see both auroral rings, then
           | there's airglow, and city lights around Gibraltar and on the
           | South American coast, and lightning flashes in the storm
           | clouds over the tropics.
        
         | dylan604 wrote:
         | I've done several shoots lit only by the full moon. Doing long
         | exposure, the images are as you stated not much different than
         | an image taken during the day, except for looking at the sky
         | and seeing stars.
         | 
         | I've also done video shoots with the newer mirrorless cameras
         | and fast lenses shooting wide open again lit with nothing but
         | the full moon. It again looks daylight on the image. As a bit
         | of BTS, I recorded a video of the screen on the camera showing
         | what it was seeing, and then pulled away and reframed to show
         | essentially the same shot as the camera but it's just solid
         | black. One of those videos was fun as we caught a bit of lens
         | flaring from the moon, and you can actually see the details of
         | the surface of the moon in the reflection. It was one of those
         | things I just never considered before as flares coming from
         | lights or the sun are just void of detail.
        
         | BurningFrog wrote:
         | Moonlight _is_ reflected sunlight.
        
           | Sharlin wrote:
           | That's obvious. But the moon is so perfectly neutral gray
           | that the reflected light is essentially the same color as the
           | incident sunlight.
        
           | gorgoiler wrote:
           | Reminds me of one of the best new comedy series in years,
           | _Very Important People_ , doing improvised spoof interviews:
           | 
           | https://www.tiktok.com/@veryimportantpeopleshow/video/731957.
           | ..
        
         | thaumasiotes wrote:
         | > even though moonlight is often thought of as bluish and
         | sunlight as yellowish!
         | 
         | Is that... true? Sunlight is seen as yellow, of course, but the
         | moon is usually thought of as white.
        
           | Sharlin wrote:
           | That's fair, I was thinking of how night, or twilight, as a
           | whole is associated with cool hues, but it's probably true
           | that moonlight in itself is usually thought of as neutral
           | white.
        
           | syncsynchalt wrote:
           | Sunlight is yellowish in atmosphere since some blue's been
           | scattered by the atmosphere[1], but it's white in space.
           | 
           | [1] https://en.wikipedia.org/wiki/Rayleigh_scattering
        
             | thaumasiotes wrote:
             | I don't think that's right. Sunlight is white in the
             | atmosphere too. Scattering causes _the sun_ , not the
             | light, to look yellow, and so sunlight is thought of as
             | yellow.
        
               | Sharlin wrote:
               | Scattering doesn't really make the sun to appear yellow
               | except when it's low, behind a lot of air. When it's
               | above 30deg or so it just looks blinding, neutral white
               | (or non-blinding neutral white if there's suitable cloud
               | cover or other filter in front of it). Even though a lot
               | of the blues _are_ scattered around, the sun still looks
               | just white when it's high in the sky.
               | 
               | But when the sun does look yellow, its light is yellow
               | too, that's the definition of "looks yellow". And the
               | golden hour paints everything in very iconic yellow-
               | orange hues. The light _as integrated over the whole sky_
               | is still white (modulo whatever's scattered back into
               | space), but the light that comes from the direction of
               | the sun is clearly tinted yellow and the light from the
               | rest of the sky is clearly tinted blue.
        
               | thaumasiotes wrote:
               | > But when the sun does look yellow, its light is yellow
               | too, that's the definition of "looks yellow".
               | 
               | Not quite; the sun is far away and is restricted to a
               | tiny portion of the sky, but its light covers half the
               | earth at a time. It is simultaneously true that the sun
               | looks yellow and that the light we receive from it is
               | white. It isn't the case that objects in direct sunlight
               | are yellowed by that light; the yellow appearance when
               | you look at the sun is something of an illusion.
               | 
               | > Even though a lot of the blues are scattered around,
               | the sun still looks just white when it's high in the sky.
               | 
               | This isn't true.
        
         | nomilk wrote:
         | Thanks. Until you pointed out it's Earth _at night_ , I had no
         | clue what was supposed to be special about this photo (it
         | appeared suspiciously pixelated for something 'high res', and
         | neighbouring pixels seemed to contrast in colour rather than
         | smoothly complementing as most photos do - but I guess that's
         | random patches of city lights being captured by the camera).
         | Cool stuff!
         | 
         | Something I haven't figured out is: what is that yellow/whitish
         | smudge toward the center of the earth? It looks like camera
         | glare or a reflection?
        
           | Sharlin wrote:
           | Yeah, it's a reflection from the window, of something inside
           | the ship.
        
         | mr_toad wrote:
         | What does it look like to human eyes? Is there enough light for
         | a person up there to see colour, or would it look like black
         | and white (like a moonlit scene on the ground).
        
           | Sharlin wrote:
           | No color, I'm pretty sure.
        
         | rachel_rig wrote:
         | Same! I mean the last time we were in space the cameras were
         | ... not this good. I can't wait to see more photos from modern
         | hardware!
        
         | TimByte wrote:
         | The camera is compensating for extremely low light, so you end
         | up with something that looks closer to a daylight exposure
        
           | Sharlin wrote:
           | I know. Apparently this was shot at ISO 51,200.
        
       | longislandguido wrote:
       | > The image, titled Hello, World
       | 
       | A new hello.jpg?
        
       | hmaxwell wrote:
       | wait why is it round?
        
         | delichon wrote:
         | The shot is from directly above the disc and the great turtle
         | is hidden beneath it.
        
         | falcor84 wrote:
         | It's not really round, it's just a lens aberration.
        
       | delichon wrote:
       | I object to being included in this image without a model release
       | and demand that pixel be removed.
        
         | brongondwana wrote:
         | Tell the world you're REALLY fat without telling the world ...
        
           | palata wrote:
           | "Your mom is so fat she would take a whole pixel on that
           | image"?
        
         | delecti wrote:
         | Your comment history suggests you're in the US, so you should
         | be pleased to learn that you weren't included. The visible
         | landmass is northern Africa, with a smidge of the Iberian
         | Peninsula visible.
        
           | layer8 wrote:
           | South America is visible on the right, and it looks to me
           | like part of North America might also be pictured close to
           | the horizon.
           | 
           | Higher-resolution image: https://www.nasa.gov/wp-
           | content/uploads/2026/04/art002e00019...
        
             | delecti wrote:
             | Oh, good point. I missed South America under the cloud
             | cover. I guess the Eastern edge of the US would indeed be
             | visible as a highly distorted smudge on the edge of the
             | visible surface.
             | 
             | For a view of roughly the same half of Earth, but with less
             | clouds, if you rotate the image clockwise by 150 degrees
             | you get roughly this viewpoint of the earth: https://earth.
             | google.com/web/@3.63731074,-23.1618975,-2690.7...
        
               | mtone wrote:
               | Thanks!
               | 
               | There's a heading control to include rotation in link: ht
               | tps://earth.google.com/web/@3.63731074,-23.1618975,-2690.
               | 7...
        
           | al_borland wrote:
           | Thank you. I have having trouble making sense of the
           | orientation. My first thought was misshapen Australia, but
           | where Spain nears Africa is much different than Australia and
           | Tasmania. Also, they forgot New Zealand... while common for
           | maps, I would expect it to show up in a photo.
        
             | nasretdinov wrote:
             | If they somehow manage to get another photo which features
             | Australia without New Zealand that would be the best Apr
             | 1st joke I've ever seen
        
           | mememememememo wrote:
           | Thanks I was looking for an orientation comment.
        
           | sph wrote:
           | Classic American thinking even from space they are the center
           | of the world smdh
        
             | Bloating wrote:
             | glad you accept that fact
        
         | idiotsecant wrote:
         | Bad news, I was across town and I do consent to my pixel being
         | used, so you're outta luck
        
       | rvnx wrote:
       | How come the pictures have such bad quality ? Is it a bandwidth
       | issue ? Or there are really constraints that are not so obvious ?
       | 
       | Because fundamentally it is a large object illuminated by
       | sunlight.
        
         | Sharlin wrote:
         | It's the night-side Earth, taken at a high ISO value to keep
         | shutter speed fast to prevent blur.
        
           | rvnx wrote:
           | Ok thank you, makes more sense, I thought it was the day-side
        
             | Sharlin wrote:
             | Yes, I was also confused when I first saw it - how could
             | the aurora be visible?! The bright sliver of atmosphere in
             | the lower right is, of course, backlit by the sun which is
             | itself eclipsed by Earth. It's the near-full moon that
             | provides most of the illumination here. Besides both
             | auroral rings you can also see airglow, city lights, and
             | lightning flashes, it's a marvellous photo.
        
         | sgt wrote:
         | No, it's BBC's compression of that image.
         | 
         | Look at the original: https://www.nasa.gov/image-
         | detail/fd02_for-pao/
         | 
         | It's grainy, but the detail is terrific.
        
           | consumer451 wrote:
           | @dang, mods: maybe this should be the post's link. The image
           | quality is much higher.
        
           | AndroTux wrote:
           | No GPS coordinates in the EXIF data. Would've been funny.
        
       | yieldcrv wrote:
       | I love how all the public critique about not being able to see
       | stars in nasa photos has resulted in better dynamic range
       | photography and composition
       | 
       | just the lowest hanging fruit that had been a second class
       | citizen to the marvel of having an extraterrestrial angle to
       | begin with
        
       | seydor wrote:
       | whats different between this and all the other pics of earth from
       | various space devices
        
         | senko wrote:
         | This is the night side.
        
         | Strom wrote:
         | Taken by a different camera, from a different location, at a
         | different time.
        
         | layer8 wrote:
         | It's taken by a human on the way to the moon.
        
           | hydrogen7800 wrote:
           | That's enough for me. There was also much hype about a new
           | blue marble picture, but I'm ok with that.
        
         | Rebelgecko wrote:
         | I saw someone point out on reddit that this probably the first
         | digital picture of the whole earth (well, 1 side of it) taken
         | by a person
         | 
         | Apollo used film and it's been a long time since anyone has
         | gone past LEO
        
           | Forge36 wrote:
           | There something amazing about that. Thanks for pointing it
           | out!
        
           | WalterBright wrote:
           | Haven't any of the space probes taken such pictures as they
           | left to wander through the solar system?
        
       | consumer451 wrote:
       | Man, this is truly awesome. I wonder if NASA's Don Pettit,
       | u/astro_pettit [0] consults on all missions going forward. He
       | really should.
       | 
       | He is "our people," as far as hacking astrophotography from
       | space. [1]
       | 
       | [0] https://old.reddit.com/user/astro_pettit
       | 
       | [1] https://news.ycombinator.com/item?id=42701645
        
       | evilelectron wrote:
       | Hello again dot.
       | 
       | Look again at that dot. That's here. That's home. That's us. --
       | Carl Sagan, Pale Blue Dot, 1994
        
       | hannesfur wrote:
       | Looking at the EXIF (with exiftool) for the image uploaded by
       | NASA (https://www.nasa.gov/wp-
       | content/uploads/2026/04/art002e00019...), apparently this was
       | taken by a Nikon D5 with an AF-S Zoom-Nikkor 14-24mm f/2.8G ED
       | and developed with Lightroom. It also seems like very little was
       | done in Lightroom. Amazing... I dumped the whole EXIF here:
       | https://gist.github.com/umgefahren/a6f555e6588a98adb74eed79d...
        
         | consumer451 wrote:
         | Thanks! This was my first question.
        
         | pants2 wrote:
         | While the D5 is a great camera it's ~10 years old. Wonder why
         | they didn't go for the Z9 which is its modern mirrorless
         | equivalent.
        
           | reactordev wrote:
           | Government budgets man...
        
           | zimpenfish wrote:
           | > Wonder why they didn't go for the Z9 which is its modern
           | mirrorless equivalent.
           | 
           | From [0], "The D5 was chosen for its radiation resistance,
           | extreme ISO range (up to 3,280,000), and proven reliability
           | in space." (
           | 
           | [0] https://www.photoworkout.com/artemis-ii-nikon-d5-moon/
        
           | loloquwowndueo wrote:
           | Zero point in measuring camera sizes (or other sizes haha)
           | when JWST is floating there.
        
           | jimbosis wrote:
           | "The Nikon D5 remains the camera of choice for the Artemis II
           | mission and will be assigned primary photographic duties. It
           | is a proven, highly-tested camera that the Artemis II team
           | knows will excel in the high-radiation environment of space.
           | However, as Artemis II Commander Reid Wiseman explained ahead
           | of yesterday's launch, he successfully fought to have a
           | single Nikon Z9 added to Artemis II's manifest."
           | 
           | https://petapixel.com/2026/04/02/a-nikon-z9-made-it-
           | aboard-t...
           | 
           | There are more interesting details in the PetaPixel article,
           | such as: "'That's the camera that they'll be using, the crew
           | will be using on Artemis III plus, so we were fighting really
           | hard to get that on the vehicle to test out in a high-
           | radiation environment in deep space,' Wiseman said."
           | 
           | H/t to "SiliconEagle73" who linked to that PetaPixel article
           | in the thread linked below.
           | 
           | https://old.reddit.com/r/nasa/comments/1sbfevm/new_high_reso.
           | ..
        
           | porphyra wrote:
           | They did bring the Z9:
           | https://petapixel.com/2026/04/02/a-nikon-z9-made-it-
           | aboard-t...
           | 
           | But yeah the grainy photo of the Earth with the D5 at ISO
           | 51200 shows the shortcomings of the ancient DSLR. Still,
           | great shot.
        
             | hypercube33 wrote:
             | I'd argue the D4s and D5 may be some of the best high ISO
             | cameras I'm aware of maybe surpassed by that one canon
             | video camera that can seemingly see in the dark (sorry I'm
             | mobile) and the D3s. I think the lower numbers produce
             | nicer looking max ISO noise but that's all preference. Sony
             | has the A7s as well but as with some of these the overall
             | resolution isn't extreme.
        
             | jeffreygoesto wrote:
             | How does the age of the camera influence physics? The only
             | thing that really helps would be increasing the aperture.
        
               | pants2 wrote:
               | Lower noise sensors and better image stabilization for
               | longer exposures
        
           | apitman wrote:
           | It might be the newest thing on the ship.
        
           | miladyincontrol wrote:
           | From what I recall reading its more or less, "we have
           | established and validated processes for using the D5." Its
           | less about getting the best possible photo, more about making
           | sure what they do take looks fine and doesnt waste a ton of
           | time.
        
           | ericcumbee wrote:
           | The D5 has flight heritage to use the industry term.
        
         | layer8 wrote:
         | Before Lightroom it might have looked closer to this:
         | https://images-assets.nasa.gov/image/art002e000193/art002e00...
        
           | consumer451 wrote:
           | Might I ask, what was your path to finding this image?
        
             | rafram wrote:
             | https://www.nasa.gov/gallery/journey-to-the-moon/
        
               | consumer451 wrote:
               | Thanks so much. Sending this link to my nerdy nephews
               | immediately.
        
           | hannesfur wrote:
           | From the EXIF we can infer that every setting was left at the
           | default. No exposure comp, no contrast, no HSL, no lens
           | correction and a linear tone curve. Just the default Adobe
           | Color profile at 5400K.
        
           | ranie93 wrote:
           | Maybe it's because I (like many) have experienced taking
           | pictures at night and seeing the grainy result that _this_
           | image struck me as incredibly realistic.
           | 
           | Almost like I ran the grainy-to-real conversion in my mind
           | and I felt like I was imagining seeing this in person.
           | Beautiful image!
        
           | divbzero wrote:
           | The photograph appears to show nightime on Earth with just a
           | sliver of daytime. Beyond cities in Iberia and along the
           | coast of Africa, most of what we can see would be reflected
           | light from the Moon? We are just past full moon on April 1.
        
             | hparadiz wrote:
             | 1/4 exposure time so 250 ms of light. the light is coming
             | from all the light sources in the universe, plus the moon,
             | plus the sun's rays refracting through the atmosphere which
             | happens even at night.
             | 
             | The natural blue light is coming from the oxygen in the
             | atmosphere but it's so overwhelming in that spot that it
             | turns the light pure white. The red/orangish is coming from
             | particulates and the green/red from aurora. My favorite
             | part I think is the very bottom where you can see the blue
             | light taper off and not overwhelm the camera sensor and you
             | can see the aurora with it. I love this photo so much.
             | 
             | Probably my favorite photo ever now.
        
               | pdonis wrote:
               | _> the light is coming from all the light sources in the
               | universe, plus the moon_
               | 
               | And all the others are negligible by many orders of
               | magnitude compared to the moon. So it's really just the
               | moon as far as this photo is concerned (except for the
               | small sliver that's still illuminated by sunlight,
               | including refracted sunlight).
        
               | vasco wrote:
               | > the light is coming from all the light sources in the
               | universe,
               | 
               | That's highly incorrect. I have many lightsources that
               | aren't contributing to any photons in that picture. For
               | example my refrigerator light.
        
               | Y-bar wrote:
               | I turn off my refrigerator light after I close the door
               | by reaching in and pushing the button. Don't you?
        
               | functional_dev wrote:
               | so the atmosphere acts as giant lamp lit from behind by
               | Moon? never thought of it that way
        
               | tantalor wrote:
               | > the light is coming from all the light sources in the
               | universe, plus the moon
               | 
               | This is true for every photo ever taken
        
             | tayo42 wrote:
             | That's what the caption the article above says
        
             | pdonis wrote:
             | _> Beyond cities in Iberia and along the coast of Africa,
             | most of what we can see would be reflected light from the
             | Moon?_
             | 
             | Yes, exactly.
        
           | deepsun wrote:
           | But that one (art002e000193~large.jpg) is only 287kB. The
           | Lightroom-processed one is 6.2MB. I would expect original to
           | be heavier.
        
             | porphyra wrote:
             | The Lightroom one was processed from raw. Also, by
             | brightening it a lot, the noisy high-ISO grain becomes more
             | apparent. Noise is famously incompressible, so it leads to
             | a much larger file size.
        
               | thfuran wrote:
               | Brightening the image may make the iso noise easier to
               | see, but it doesn't create it.
        
               | porphyra wrote:
               | Noise that's easier to see will not be compressed away by
               | the JPEG compression. JPEG is basically just DCT +
               | thresholding. Any higher amplitude noise is going to stay
               | and increase the final file size.
               | 
               | Also, pulling more data from your 14 bit or 16 bit raws
               | results in more noise in the end compared to the
               | straight-out-of-camera 8 bit JPEGs.
        
               | miduil wrote:
               | But lossy-codecs job is to utilize psychovisual tricks to
               | discard as much high-frequency information as possible,
               | whilst remaining similar visual effects. If you increase
               | the brightness in RAW and then re-encode the JPEG - more
               | noise is being pulled up in the visual spectrum, therefor
               | less of that information (filesize) is discarded.
               | 
               | For example, if you render Gaussian noise in photopea and
               | export as JPEG 100% quality, it has 9.2MB. If you reduce
               | the exposure by -2 it goes down to 7.8MB. That's
               | partially because more parts of the noise are effectively
               | black pixels, but also I believe because of the earlier
               | mentioned effect.
        
               | godelski wrote:
               | It's not lossless
        
             | saint_yossarian wrote:
             | The resolutions are different, 1920x1280 vs. 5568x3712.
             | 
             | Also possibly different JPEG quality settings.
        
               | Melatonic wrote:
               | Could be the thumbnail / preview image generated
               | alongside the raw
        
           | fortyseven wrote:
           | It's beautiful as these all are, that one is probably my
           | favorite. And as somebody else said it kind of feels more
           | real seeing the grain like that. It's just beautiful. A side
           | we never see quite like this.
        
         | SMAAART wrote:
         | https://exifinfo.org/detail/RjJtDLtCfS5kpq0fM2e7yA
        
         | to11mtm wrote:
         | ...
         | 
         | My only curiosity, and yeah I know orders of significance
         | etc...
         | 
         | Buuuuut I wonder why they didn't consider a Z5[0][1] and the Z
         | mount 14-24, or the Z5 with an adapter for the F mount
         | 14-24....
         | 
         | There's at least a pound of weight savings on the table.
         | 
         | Specifically, I wonder if it's a fun reason? i.e. it would be
         | interesting if there was a technical reason like 'IBIS fails
         | miserbly' or 'increased sensor resolution adds too much noise'
         | (even at that ISO you gave from the EXIF...)
         | 
         | [0] I'm really more of a Sony person but am thus keenly aware
         | about importance of UX _feel_ , so I tried to keep the question
         | apples to apples here.
         | 
         | Edited to add:
         | 
         | [1] Per [0] I may be stupid in thinking the Z5 is a 'at least
         | minimal' substitute so happy to learn something here.
        
           | geerlingguy wrote:
           | They have a Z9 on board for radiation testing, but the D5 is
           | the primary body for imaging on this mission IIRC
        
             | to11mtm wrote:
             | Yeah other folks gave better insight while I was writing my
             | comment, oops...
        
             | throw0101d wrote:
             | The D5 has been used on the ISS since 2017, including EVAs:
             | 
             | * https://en.wikipedia.org/wiki/List_of_cameras_on_the_Inte
             | rna...
             | 
             | The ISS now (also?) has Z9s. So they're both generally
             | known-quantities.
        
           | rafram wrote:
           | When you're riding a rocket that weighs 3.5 million pounds...
        
             | to11mtm wrote:
             | Is that the Rocket or the Craft+Mission payload?
             | 
             | My understanding is it's on the order of 5-10 pounds of
             | rocket juice to get one pound of something to LEO, thus the
             | question.
        
               | chainingsolid wrote:
               | At 3.5 mil pounds that has to be the full rocket. But
               | quick [1]googling is giving an even higher total mass
               | number...
               | 
               | 1. https://www.nasa.gov/wp-
               | content/uploads/2026/01/sls-5640-sls...
        
             | chainingsolid wrote:
             | Mass higher up the rocket costs several multiples more mass
             | in propellant and propellant handling lower in the rocket.
             | And the more deltaV you want the higher the multiplication.
             | (If I remember right some weight issues of some kind on the
             | Apollo capsule and or lander required a common bulk head in
             | the first stage to make up the performance loss!)
             | 
             | However cameras probably fall into the variance in
             | astoraunt weight somewhat.
        
         | atentaten wrote:
         | Nice. It would've been cool to see what the location
         | information in the EXIF looked like, if it were there.
        
           | Kye wrote:
           | The D5 doesn't have built in GPS, and adding it requires an
           | attachment. I don't know if the smartphone app works on that
           | model, but it is from the same year as my D5600 which does
           | support it. The app provides GPS but also drains the battery
           | fast. I turned airplane mode on after the first dead battery.
           | 
           | GPS might work out there though:
           | https://www.nasa.gov/directorates/somd/space-
           | communications-...
        
         | porphyra wrote:
         | I'd have probably shot it wide open at f/2.8 rather than
         | cranking the ISO up to 51200. Incredibly impressed at the
         | steady hands for a sharp image at 1/4 s shutter speed though!
         | Maybe they just let the camera float in space with the mirror
         | up, triggering it remotely.
        
           | treis wrote:
           | They're in space so they only sort of need to hold the
           | camera.
        
             | sdenton4 wrote:
             | Or maybe press the timer and let it float...
        
               | plaguuuuuu wrote:
               | or sticky-tape it to the window.
               | 
               | d5 has an actual shutter yeah? not mirrorless? I think
               | the shutter moving will spin the camera.
        
               | hackerdood wrote:
               | I haven't looked at the manual but it likely has the
               | ability to flip and keep the mirror up for direct capture
               | on the sensor without the mirror flipping up and down
               | between exposures.
        
               | embedding-shape wrote:
               | Bad idea, shutter speed was 1/4 apparently
               | (https://news.ycombinator.com/item?id=47632457), even the
               | small rotational inertia everything in zero gravity gets
               | from a human "dropping" it would probably be enough to be
               | annoying, you'd get a better shot holding it.
        
           | narmiouh wrote:
           | I would imagine since they are not circling the earth, that
           | there will be pull of gravity and the camera would start to
           | move relative to the spacecraft. But may not fast enough for
           | a short exposure
        
             | dotancohen wrote:
             | The gravity of the Earth (and moon, and everything else) is
             | uniform (i.e. no gradient) on the scale of things the size
             | of that capsule at the distance that capsule is from them,
             | on the order of time of the exposure of that photograph. So
             | the gravity (from any source) will pull on the spacecraft
             | and on the camera in the same fashion.
             | 
             | To fully answer the question, the moon's gravitational
             | gradient does pull on the Earth, the ocean closest to the
             | moon, and the ocean furthest from the moon differently. But
             | those are objects separated by thousands of kilometers,
             | having hours of gravitational influence acting upon them.
        
             | gus_massa wrote:
             | Once you are out of the atmosphere and turn off your
             | thrusters, you are on "fee fall" and the gravity on the
             | camera, you and the spaceship produce the same acceleration
             | and they cancel and it looks exactly like "zero gravity".
             | It doesn't matter if you are in orbit around the Earth,
             | going to the Moon.
        
             | mr_toad wrote:
             | They're not circling the Earth, but they're still orbiting
             | it. Their orbit is highly eccentric, and will be near the
             | Moon at apogee.
        
           | throw0101d wrote:
           | > _I 'd have probably shot it wide open at f/2.8 rather than
           | cranking the ISO up to 51200._
           | 
           | One of the reasons the D5 supposedly was chosen was because
           | of its high dynamic and good low light performance. It can go
           | up to ISO 3,280,000:
           | 
           | * https://en.wikipedia.org/wiki/Nikon_D5
           | 
           | The D5 has been used on the ISS, including EVAs, since 2017,
           | so is a known quantity:
           | 
           | * https://en.wikipedia.org/wiki/List_of_cameras_on_the_Intern
           | a...
        
             | porphyra wrote:
             | The good low light performance was amazing for its time (10
             | years ago), and it still holds up decently today. But let's
             | not kid ourselves -- it has been clearly surpassed by
             | modern backside illuminated CMOS sensors like the one on
             | the Z9.
             | 
             | EDIT: sorry, it seems I'm wrong. I just checked
             | https://www.photonstophotos.net/Charts/PDR.htm and while
             | the Z9 has the clear edge with 2 more stops of dynamic
             | range at low ISO, the D5 actually pulls ahead at high ISO.
             | Perhaps the technological improvements haven't been that
             | much for the shot-noise dominated regime.
        
               | nelox wrote:
               | Was hoping to hear from the person at NASA who made the
               | choice and why.
        
               | throw0101c wrote:
               | Sure, but D5s were also doing EVAs for many years and
               | much more of a know quantity in space.
        
           | ourmandave wrote:
           | You can get a D5 on amazon.com. It would be amazing if one of
           | the astronauts did a review explaining how it performs in
           | space.
        
             | adamm255 wrote:
             | Oh man. "Rolled with the D5 on my recent trip around the
             | moon, decent performance, very light and easy to hold in
             | zero gravity".
        
             | mhb wrote:
             | f/8 and be there?
        
           | jen729w wrote:
           | You might misunderstand how ISO works on digital cameras. (I
           | did.)
           | 
           | https://www.youtube.com/watch?v=ZWSvHBG7X0w
        
             | deathanatos wrote:
             | Good grief, that video suffers the YouTube-ism of "ramble
             | on about how you don't understand X" for _way too long._
             | 
             | Video alleges people think ISO makes the sensor "more
             | sensitive or less sensitive". (I ... don't _think_ this is
             | common? But IDK, maybe this is my feldspar.)
             | 
             | (The video also quibbles that it is "ISO setting" not "ISO"
             | ... while showing shots of cameras which call it "ISO",
             | seemingly believing that some of us believe ISO is film
             | speed, in a digital camera?)
             | 
             | Anyways, the video wants you to know that it is sensor
             | gain. And, importantly, according to the video, analog
             | gain, not digital gain.1 I don't know that the video does a
             | great job of saying it, but basically, I think their
             | argument is that you want to maximize usage of the bits
             | once the signal is digitized. Simplistically, if the image
             | is dark & all values are [0, 127], you're just wasting a
             | bit.
             | 
             | You would want to avoid clipping the signal, so not too
             | bright, either. Turn your zebras on. (I don't think the
             | video ever mentions zebras, and clipping only indirectly.)
             | 
             | The video does say "do ISO last" which I think is a good
             | guideline. Easier said than done while shooting, though.
             | 
             | ... also while fact checking this comment, I stumbled
             | across Canon's KB stating to use as low an ISO as possible,
             | which the video rails against. They should talk to Canon, I
             | guess?
             | 
             | 1with the caveat that sometimes there is digital gain too;
             | the video notes this a bit towards the end.
        
               | jen729w wrote:
               | Sounds like you'll be spending your day making a better
               | video! :-)
        
               | bingkaa wrote:
               | i think we need to differentiate between raw or
               | derivative format. canon KB might cater to wider audience
               | thus the latter
        
               | harrall wrote:
               | ISO changes the analog gain and in a way yes, it does
               | make it more sensitive to a certain _range of
               | brightness_.
               | 
               | This is because the ADC (analog to digital converter)
               | right after can only handle so many bits of data (like
               | 12-16ish in consumer cameras). You want to "center" the
               | data "spread" so when the "ends" get cut off, it's not so
               | bad. Adjusting the ISO moves this spread around. In
               | addition, even if you had an infinite bitrate ADC, noise
               | gets added between the gain circuit and the ADC so you
               | want to raise the base signal above the "noise floor"
               | before it gets to the ADC.
               | 
               | Gain is not great -- it amplifies noise too. You want as
               | low ISO as possible (lowest gain), but the goal is not
               | actually to lower gain; your goal is to _change the
               | environment so you can use a lower gain_. If you have the
               | choice between keeping the lights off and using higher
               | ISO versus turning on the lights and using a lower ISO,
               | the latter will always have less noise.
               | 
               | Most photo cameras have one gain circuit that has to
               | cover both dark and light scenes. Some cameras like a
               | Sony FX line actually have two gain circuits connected to
               | each photosite and you can choose, with one gain circuit
               | optimized for darker scenes and the other optimized for
               | brighter scenes. ARRI digital cinema line cameras have
               | both and both are actually running at the same time (!).
        
               | seba_dos1 wrote:
               | > your goal is to change the environment
               | 
               | ...or integration time.
        
               | OJFord wrote:
               | > The video does say "do ISO last" which I think is a
               | good guideline. Easier said than done while shooting,
               | though.
               | 
               | > ... also while fact checking this comment, I stumbled
               | across Canon's KB stating to use as low an ISO as
               | possible, which the video rails against. They should talk
               | to Canon, I guess?
               | 
               | Isn't ISO last the same as setting it as low as possible?
               | Obviously it's always set to something, so I thought
               | 'doing it last' means start with it low, set exposure &
               | shutter, increase as necessary?
               | 
               | (Shutter speed being dictated by subject and availability
               | of tripod, essentially it's just exposure & ISO which
               | becomes about how much light there is and how it's
               | distributed, I suppose.)
               | 
               | I'm not really into photography though, so perhaps that's
               | all nonsense/misunderstanding.
        
           | js2 wrote:
           | Wide open generally sacrifices lens sharpness.
        
             | porphyra wrote:
             | Sure, but less grain is often worth it. There's a reason
             | why fast lenses exist. The high quality lens being used
             | here can probably still resolve 20 MP adequately even wide
             | open.
        
               | dgxyz wrote:
               | I had that lens. It's soft as fuck around the edges open.
               | 
               | Peak sharpness is about f/8. They should have had the D5
               | on aperture priority auto iso, pushed the exposure comp
               | either way and then just fired at f/8 and let the camera
               | make the decisions.
               | 
               | But they are astronauts not photographers :)
               | 
               | The modern Z lenses are far better and sharper open but
               | much larger generally.
        
           | throwaway290 wrote:
           | If you think they only took one shot, you're not a digital
           | photographer)
           | 
           | In this special situation you get as many as you can a few
           | dozen at least. Then only publish the one that looks the
           | best. If it's f4 then f4 worked best.
        
           | chrisbarr wrote:
           | It was shot at f/4, so opening up 1 stop to f/2.8 would only
           | reduce the ISO to 25600
        
         | g-mork wrote:
         | 250 ms f/4 ISO 512000 in case anyone was wondering. I wonder if
         | they applied any denoise, it looks great for such high ISO
        
         | HPsquared wrote:
         | Any GPS data? I wonder if it would pick anything up. Altitude
         | reading would be interesting!
        
         | throw0101d wrote:
         | Yes, the D5s are the 'official' Handheld Universal Lunar
         | Cameras (HULCs), but (a?) Z9 also got on-board at the 'last
         | minute' (which means two years ago):
         | 
         | * https://petapixel.com/2026/04/02/a-nikon-z9-made-it-
         | aboard-t...
         | 
         | They have a thermal blanket for exterior work:
         | 
         | * https://petapixel.com/2026/02/24/artemis-ii-astronauts-
         | will-...
         | 
         | * https://petapixel.com/2025/01/10/the-custom-nikon-z9-and-
         | the...
         | 
         | * Various stories with the "Artemis" tag:
         | https://petapixel.com/tag/artemis/
         | 
         | The D5 has been used on the ISS, including EVAs, since 2017, so
         | they're a known quantity:
         | 
         | *
         | https://en.wikipedia.org/wiki/List_of_cameras_on_the_Interna...
         | 
         | The Mercury and Apollo missions used Hasselblad 500-series-
         | based cameras (modified):
         | 
         | * https://www.hasselblad.com/about/history/hasselblad-in-
         | space...
        
           | keyle wrote:
           | as a Hassie lover it made me a bit sad that they went with a
           | D5 but hey, who cares about the camera, the picture was worth
           | a billion bucks and it delivered.
           | 
           | It's so refreshing to be mesmorised by a picture in the age
           | of shorts and reels.
        
           | nate wrote:
           | the morning after the launch i just randomly went onto their
           | livestream and one of the astronauts was asking mission
           | control for help on also using the gopros and iPhone cameras.
           | i guess they have some. and he was struggling at getting a
           | properly exposed photo with those. he said they were coming
           | out super over exposed. but the D5 was working nominally.
           | mission control said they'd get back to them about ideas on
           | adjusting the gopros and iPhones. but it was funny to hear
           | they're trying "new" tech and struggling with it up in space,
           | and that 2005 D5 is still the champ :)
        
             | throw0101c wrote:
             | The SLR-like cameras have a bunch of manual modes so you
             | can 'force' them to get _something_ captured, and you can
             | then perhaps  'fix it in post'.
             | 
             | Modern tech allows more people to capture more things more
             | easily, but when the automation fails there aren't really
             | many manual modes to fall back on.
        
             | PeterStuer wrote:
             | You have to wonder how unserious this can get. Given the
             | unimaginable cost of this mission, they are faffing around
             | as your typical aunt with Windows Home laptops and iPhones?
             | Seriously?
        
               | B1FF_PSUVM wrote:
               | > faffing around
               | 
               | Sheesh, let the lab mice have a breather. Want them to
               | solve physics during the trip?
        
               | jjulius wrote:
               | I'll echo that "sheesh" in the other comment, too.
               | They're so unserious compared to those super serious
               | Apollo guys[1], right? After all, the Apollo folk never
               | would've smuggled contraband for fun on the Moon[2]!
               | 
               | [1] https://youtu.be/8V9quPcNWZE?si=WBYqsQ1LitRC33rb
               | 
               | [2] https://youtu.be/t_jYOubJmfM?si=QWMhqrwJm2LL14sC
        
             | CWuestefeld wrote:
             | _he was struggling at getting a properly exposed photo with
             | those. he said they were coming out super over exposed._
             | 
             | This is exactly what newbies experience when trying to
             | photograph the moon from Earth. It's not intuitively
             | obvious, but the light coming off the moon is essentially
             | full-daylight bright. But the moon is small against a very
             | black background, and depending on how the auto-exposure is
             | operating, this often leads to guessing that the scene as a
             | whole needs a lot more exposure.
             | 
             | I imagine that trying to photograph the Earth when a
             | significant part of what's in view is experiencing daytime,
             | is very much the same thing.
        
             | jjulius wrote:
             | > ... 2005 D5...
             | 
             | About 11 years too far back:
             | 
             | > The Nikon D5 is a full frame professional DSLR camera
             | announced by Nikon Corporation on 6 January 2016 to succeed
             | the D4S as its flagship DSLR.
             | 
             | https://en.wikipedia.org/wiki/Nikon_D5
        
         | brudgers wrote:
         | _It also seems like very little was done in Lightroom._
         | 
         | This is consistent with good photographic technique that
         | prioritizes "getting it right in the camera."
        
         | hypercube33 wrote:
         | Wild. I saw a quick glance and assumed the Z9 but the D5 is
         | near the peak of the DSLR world so I guess.
        
         | didgetmaster wrote:
         | The EXIF data says that the picture was taken with the flash
         | off!
         | 
         | How did they get the Earth to light up when it is obviously
         | dark outside? Is this fake?
        
           | jstanley wrote:
           | Possibly you're just joking, but it's pretty obvious that the
           | flash would not appreciably illuminate the entire earth.
        
             | didgetmaster wrote:
             | Obviously. It was a joke.
        
         | anjel wrote:
         | Almost 6 decades later, Omega still has a firm hold on NASA by
         | the wrist. https://www.gearpatrol.com/watches/omega-
         | speedmaster-artemis...
        
           | dddw wrote:
           | X33 Gen2 certainly looks better than gen1
        
         | kingforaday wrote:
         | It's fun to think about tile dilation per the exif captured
         | Create Date: "2026:04:03 00:27:39.26". I know it's negligible
         | over the trip, but when they took it, was their time really
         | "2026:04:03 00:27:39.25"?
        
         | walrus01 wrote:
         | The ISO 51200 would certainly explain the grain when viewing
         | the image at 1:1 scale.
        
       | ge96 wrote:
       | Why 'spectacular' the quotes
       | 
       | I'm sad not alive at a time like Cowboy Bebop oh well, this is a
       | great pic, overview effect
        
         | layer8 wrote:
         | They are quoting NASA.
        
         | juleiie wrote:
         | [unexplained loss of data]
        
           | ge96 wrote:
           | It is funny if you think about it, imagine you arrive on a
           | planet and there is nothing there, now what. Not saying it is
           | not worth doing but it's like other aspects of life, about
           | the journey. But yeah I think we are lucky to have this
           | ability/get outside of our sandbox. Be aware of the bigger
           | picture.
        
       | sensanaty wrote:
       | It really is crazy when you think about it, we're capable of
       | taking a picture of the _planet we live on_ from outer space. We
       | take it for granted, that we know what it all looks like. I often
       | find myself wondering how ancient peoples before us would react
       | to something like this
        
         | rapnie wrote:
         | Especially if they knew the sad state of the world whence the
         | rocket was fired from, almost as a distraction of the decay of
         | modern society mankind faces because of their fancy tech and
         | the madmen it enables. I used to be fan of all space tech
         | related stuff, but to me it has lost a lot of its shine. The
         | people of old may say "hey, it is just like Easter island,
         | except their monuments are dedicated to the God of Tech".
        
       | MrGilbert wrote:
       | I love the fact that you can see the aurora at both poles!
        
         | sva_ wrote:
         | I wish I could see a pic from today with the aurora. I was
         | surprised to see the aurora in northern Europe a couple hours
         | ago, it is very active right now.
        
           | MrGilbert wrote:
           | Yeah, it is - unfortunately, it is rather cloudy in my area
           | at the moment. Luckily, the weather was better during the
           | 19./20. January event, which I'll carry forever in my heart.
        
         | Rury wrote:
         | I like the non brightened version, where you can clearly see
         | the light coming from cities. How cool would it be if we saw
         | similar on another planet...
        
         | pndy wrote:
         | I may be mistaken but there's even atmosphere visible - that
         | tiny translucent band on the darker photo
        
           | nandomrumber wrote:
           | Wild.
           | 
           | That tiny translucent band...
           | 
           |  _The total mass of Earth's atmosphere is about 5.5
           | quadrillion tons_
           | 
           | https://www.britannica.com/story/how-much-does-earths-
           | atmosp...
        
         | TimByte wrote:
         | It almost looks like the Earth has a subtle glow around it
        
       | nout wrote:
       | It took me a while to orient myself on that picture, until I
       | realized where Spain is... :)
        
       | brcmthrowaway wrote:
       | Does there exist a camera that can zoom into a single person from
       | this distance?
        
         | xandrius wrote:
         | Nope, not today that can be easily brought in space. Plus the
         | atmosphere interfering.
        
         | HanClinto wrote:
         | Relevant XKCD "what if?" [0] is relevant.
         | 
         | [0] - https://what-if.xkcd.com/32/
        
         | mr_toad wrote:
         | What clearance level do you have?
        
       | underlipton wrote:
       | Can't decide if this is "MOEAGARE ARUCHIMISU" moment or a
       | "Transcending Time" moment.
        
       | susam wrote:
       | Much higher quality images are available on the NASA Image
       | Library:
       | 
       | Dark Side of the Earth: https://www.nasa.gov/image-detail/amf-
       | art002e000193/
       | 
       | Hello World: https://www.nasa.gov/image-detail/fd02_for-pao/
       | 
       | On images-assets.nasa.gov, we can find the 5567x3712 resolution
       | versions of these pictures:
       | 
       | Dark Side of the Earth: https://images-
       | assets.nasa.gov/image/art002e000193/art002e00...
       | 
       | Hello World: https://images-
       | assets.nasa.gov/image/art002e000192/art002e00...
        
         | ajs1998 wrote:
         | It disappoints me greatly they're not raw :(
        
       | nektro wrote:
       | truly stunning picture
        
         | prism56 wrote:
         | Can I see the thin band of atmosphere?
        
           | nasretdinov wrote:
           | Yeah I'm pretty sure that's atmosphere since it does scatter
           | light slightly
        
       | sph wrote:
       | It really just is a blue marble floating in nothingness.
        
       | suzzer99 wrote:
       | Where's Antarctica?
        
         | saint_yossarian wrote:
         | Just behind the horizon somewhere on the top right, or maybe
         | some of those clouds are already it.
         | 
         | You can see for yourself in Google Maps if you enable the globe
         | view, unfortunately it seems I can't share a direct link.
        
       | mkoryak wrote:
       | This is exactly what I need for printing as 14x10 4x6 photos
       | stitched together!
        
       | eager_learner wrote:
       | this ought to put flat-earthers completely down. :)
        
       | getnormality wrote:
       | If you're confused what you're looking at, turn it upside down.
        
         | abdusco wrote:
         | West Africa & Gibraltar strait
        
         | computomatic wrote:
         | From the article:
         | 
         | > The Earth appears upside down
         | 
         | Which I find to be a rather interesting take.
        
       | thumbsup-_- wrote:
       | Imagine that all our joys, problems and attachments are within
       | that blue sphere
        
       | bilsbie wrote:
       | Can we confirm the cloud patterns match weather data from the
       | same time? Might be a good way to verify.
        
         | darknavi wrote:
         | Verify what?
        
           | bilsbie wrote:
           | The shapes match.
        
             | pndy wrote:
             | You think this is some kind of hoax?
        
               | bilsbie wrote:
               | No but I'd like an answer for the people that claim that.
        
               | dfedbeef wrote:
               | Just don't talk to them
        
               | GMoromisato wrote:
               | I agree with "don't talk to those people". If they don't
               | believe this picture, why would they believe a weather
               | satellite picture?
        
         | greentea23 wrote:
         | No, that part of NASA was defunded.
        
       | whycombinetor wrote:
       | "It is the first time since 1972 that humans have travelled
       | outside of the Earth's orbit." But they're not tho (Earth's
       | gravitational dominance extends 4x the distance to the moon)
        
         | rationalist wrote:
         | Technically correct, the best kind of correct. After all, the
         | moon is in Earth's orbit.
        
           | mr_toad wrote:
           | One would hope they're still in Earth's orbit - if they've
           | achieved escape velocity they're not coming back.
        
             | exegete wrote:
             | So if we're being technical I think they did achieve escape
             | velocity? But the moon's gravity and some timed burns will
             | slingshot them back.
        
               | gwd wrote:
               | But one could imagine, as a failsafe, arranging things so
               | that Integrity _was_ in fact still in orbit around the
               | Earth, as a sort of  "backup" in the event that they
               | somehow missed the moon's slingshot effect.
        
         | xyzsparetimexyz wrote:
         | Theyre travelling to a region of space where the moons gravity
         | is more important than the earths though. I think that counts
        
         | pdonis wrote:
         | _> It is the first time since 1972 that humans have travelled
         | outside of the Earth 's orbit._
         | 
         | They mean outside of low Earth orbit (which basically means
         | further away than the ISS). The phrasing is not ideal.
         | 
         |  _> Earth 's gravitational dominance extends 4x the distance to
         | the moon_
         | 
         | "Earth's gravitational dominance" is not a single thing; it
         | depends on what kind of "dominance" you're talking about.
         | 
         | For example, even though the Moon is usually described as being
         | in orbit about the Earth, its orbit is always concave towards
         | the Sun. In other words, its net gravitational acceleration is
         | always towards the Sun--even when the Earth is on the other
         | side of it from the Sun. So by this criterion it's not in orbit
         | about the Earth, it's in orbit about the Sun, doing a
         | complicated do-si-do with the Earth, also in orbit about the
         | Sun.
         | 
         | I'm not sure what definition of "dominance" you're using that
         | extends the Earth's "dominance" to 4 times the distance of the
         | Moon.
        
           | nandomrumber wrote:
           | This video explains what you're talking about re the moons
           | orbit always curving toward the sun, and also mentions Earths
           | gravitational dominance.
           | 
           | It's about the suns gravitational pull on the moon dominating
           | over the Earths gravitational pull on the moon, but that due
           | to the centrifugal force (there isn't one, so conservation of
           | angular momentum) the Earth's gravitational pull dominates.
           | 
           | https://youtu.be/KBcxuM-qXec
        
             | pdonis wrote:
             | The statement I made about acceleration due to gravity was
             | with reference to an inertial frame centered on the Sun, in
             | which there is no centrifugal force. The video you
             | reference takes that viewpoint during its first part.
             | 
             | The claim about centrifugal force refers to the Hill
             | sphere, which is a _different_ notion of  "gravitational
             | dominance". The basic idea behind that is that, while the
             | Sun's force on the Moon is greater than the Earth's, it
             | _varies_ in space, in the region where the Earth and Moon
             | are orbiting, much _less_ than the Earth 's does. So we can
             | "subtract out" the Sun's gravitational force, so to speak,
             | since we can approximate it as constant in the region we're
             | interested in.
             | 
             | The video, however, bungles this somewhat, because its
             | claim about "centrifugal force" is made in a frame which is
             | _centered on the Sun_ --but rotating at the same rate the
             | Earth revolves around the Sun. But _nobody actually uses
             | such a frame_! Doing that would be silly. The natural frame
             | for us on Earth to use if we  "subtract out" the Sun's
             | gravitational force to analyze the Earth-Moon motion is a
             | frame _centered on the Earth_.
             | 
             | In _this_ frame, we can say that the Moon orbits the Earth,
             | not because there is some  "centrifugal force" canceling
             | out the Sun's force, but because we've subtracted out the
             | Sun's force by centering our frame on the Earth. Or, to put
             | it another way, we're treating the whole Earth-Moon system
             | as freely falling in the Sun's gravitational field, and as
             | long as the Sun's field is, to a good enough approximation,
             | constant in the region we're interested in, we can simply
             | _ignore_ the Sun 's gravitational force. (This viewpoint is
             | much more natural in General Relativity, where "gravity" is
             | not a force at all to begin with.) Such a frame is called
             | an "Earth-Centered Inertial" frame, and it's the frame
             | that's being used, for example, to manage the Artemis II
             | spaceflight.
        
               | nandomrumber wrote:
               | Sounds like you might have explained it better than the
               | video.
        
       | dzonga wrote:
       | the pale blue dot.
       | 
       | if anything in life gives me pleasure is I have experienced life,
       | with its highs and downs on this little speck.
        
       | thenthenthen wrote:
       | If you are interested in taking similar images, there are several
       | satellites transmitting 'full disk' images like this, instead of
       | a camera you need a dish or yagi a sdr and lna. Example
       | satellites are Himawari 8, GOES 18, Fengyun 2H.
        
         | mariusor wrote:
         | And they can be found online pretty easily:
         | https://himawari8.nict.go.jp/.
         | 
         | I remember there's some tools to use the images as desktop
         | backgrounds: https://github.com/boramalper/himawaripy
        
         | qingcharles wrote:
         | I remember watching grainy B+W ones in the 80s via a dish. It
         | might have been a slow scan signal back then? It blew my mind
         | watching the Earth live as a disk, seeing the weather in
         | realtime.
        
       | rav3ndust wrote:
       | to quote the old meme:
       | 
       | > hey, i'm in a picture with all my friends!
        
       | nntwozz wrote:
       | For anyone not understanding the high ISO please have a look at
       | this recent video by minutephysics.
       | 
       | Do _you_ understand ISO?
       | 
       | It took me 21 years...
       | 
       | https://youtu.be/ZWSvHBG7X0w
       | 
       | This video explains how ISO is very different to what most people
       | imagine, and how you can use this knowledge to take less noisy
       | photos.
        
       | tacostakohashi wrote:
       | There's something a bit weird having these digital photos and
       | crisp digital audio and video of the astronauts, and seeing
       | pictures of mission control with flat screens after having grown
       | up on grainy analogue video, crackly audio with lots of beeps,
       | and mission control being choc full of CRTs being watch by men in
       | short sleeve shirts with black ties and cigarettes.
        
         | jumpkick wrote:
         | I had a similar thought at first, and then remembered the
         | steady technical progress of the Shuttle era (at least from my
         | recollection).
        
         | TimByte wrote:
         | I get that feeling, but I think a lot of the "texture" we
         | remember is really just the limitations of the tech at the time
        
       | radium3d wrote:
       | Did they mount my Canon 7D to the outside? :D reminds me of the
       | familiar grain haha
        
       | erelong wrote:
       | Literally a wasteful distraction from more important things
        
       | 1zael wrote:
       | How are people still flat-earthers after stuff like this
        
         | heresie-dabord wrote:
         | Because without the _network effect_ of adequate education,
         | scientific understanding doesn 't scale.
         | 
         | What _does_ scale, unfortunately, is arrant nonsense.
        
         | rootusrootus wrote:
         | Maybe I'm just a dumb optimist, but I've always assumed that
         | the flat earthers started out as an enteraining debate club
         | intentionally trying to prove something impossible just for the
         | challenge, which got overtaken by a tiny number of vocal
         | idiots. I have heard they largely have moved on to Qanon, which
         | tracks.
        
           | erulabs wrote:
           | The initial modern flat earth movement was absolutely
           | trolling, no doubt about it. But as the myth grew, enough
           | grifters and actual idiots glomed onto the idea that it
           | became what it originally mocked. Poe's law and all that.
           | 
           | Similar to the "I fell in love with an AI!" folks, it's
           | _largely_ undercover salesmen hawking their goods to the
           | gullible.
        
           | Bloating wrote:
           | ...sounds like the No-Kings people
        
             | hydrogen7800 wrote:
             | Yeah, certainly not the kings cult.
        
             | rootusrootus wrote:
             | If I have to choose between the people protesting
             | authoritarianism and those embracing it, I'll take the
             | former.
        
         | JBits wrote:
         | You can't claim to have superior knowledge if you admit you're
         | wrong.
        
         | boca_honey wrote:
         | This photo could be easily faked. I don't believe the Earth is
         | flat, but I also don't think everybody on the planet should be
         | 100% on one side of a discussion. Even if flat-earthers are
         | kinda dumb, I think it's worse to force everyone into
         | intellectual submission just because you're "right".
        
           | hdivider wrote:
           | Even if clearly one side is correct without any doubt
           | whatsoever, beyond any question? Such as 2+2=4 -- we should
           | accept a situation where some people insist this is not true?
           | It seems irrational.
        
           | krapp wrote:
           | >I think it's worse to force everyone into intellectual
           | submission just because you're "right".
           | 
           | I think it's worse to consider the acceptance of reality as
           | being "forced into intellectual submission" and to use scare
           | quotes around "right."
           | 
           | There are discussions that everyone on the planet should be
           | 100% on one side of and this is one of them. It is literally
           | just wasting everyone's time to entertain the premise that
           | opinions to the contrary hold any value.
        
         | chungy wrote:
         | I'm pretty sure people claim to be flat-earthers as a lark.
        
           | qingcharles wrote:
           | I know some MAGAs. I promise you they believe it 100%. They
           | often talk of ice walls and one asked me if the Artemis
           | mission would "break through the firmament"?
           | 
           | There is a huge side of TikTok and Reels that most of us here
           | would never find on our feeds which is dedicated to insane
           | conspiracy theories and constitutes a large amount of the
           | media that MAGAs etc consume.
        
             | chungy wrote:
             | If you think MAGA followers believe in flat-earth, you've
             | deluded yourself badly.
        
         | thegrim33 wrote:
         | They aren't, what you see is a combination of trolls and
         | propagandists; very few real human beings actually believe in
         | such things.
        
       | CommenterPerson wrote:
       | Why didn't NASA or the news agencies rotate the image so North is
       | up? and slightly to the right. That would make Africa instantly
       | recognizable as that's how maps are imprinted in our brains.
       | 
       | There is no "up" in space, so that wouldn't be editing the image
       | I feel. The camera just happened to be oriented "upside down".
        
         | getnormality wrote:
         | I was thinking the same thing, but then I decided to embrace
         | the frustration of the image. It's reminding us that the
         | pictures we have in our heads are kind of fragile. They don't
         | prepare us for a live encounter with Earth from some random
         | angle in space.
        
           | thsbrown wrote:
           | This is kind of profound.
        
         | spopejoy wrote:
         | I asked a different question in my mind, who says it "appears
         | to us as upside down"? I would think if you lived in Patagonia,
         | the south pole is "up".
        
         | s4i wrote:
         | I personally prefer to view it in the same orientation the
         | photographer saw it in their viewfinder. Makes me feel more
         | like I'm inside the vessle looking at the planet.
        
         | mr_toad wrote:
         | If you live in the southern hemisphere most pictures of the
         | Moon that you see online look upside down compared to ones that
         | you take yourself.
        
       | steve-atx-7600 wrote:
       | To paraphrase Carl Sagan: insignificant plant in an insignificant
       | galaxy and there's a good chance we'll annihilate ourselves.
        
       | evolve2k wrote:
       | Comparing the final two images of taken of earth in 1972 and 2026
       | respectively; does the 2026 (left) image look murkier and less
       | crisp to anyone else?
       | 
       | Surely our camera gear is exponentially better now? Is the reason
       | for the new image being 'murkier' due to light, pollution or
       | something else?
        
         | mccraveiro wrote:
         | 1972 -> taken during daytime 2026 -> taken during nightime
        
         | dsego wrote:
         | > Surely our camera gear is exponentially better now
         | 
         | They are better, but not exponentially. You can't beat physics,
         | film cameras can still compete in terms of dynamic range and
         | resolution, the optical elements haven't changed that much. The
         | 1972 photo was taken on medium format film, which is twice the
         | size of the sensor area in the modern one, which means more
         | photons and less noise. The recent image was take at a really
         | high ISO, which adds to the noisiness.
        
       | firefoxd wrote:
       | Fun question: What time was this taken?
       | 
       | The exif includes time, but not time zone. They are not quite at
       | the moon, and Lunar Time is under active development but not
       | official. Also clocks tick slower under the moon's weaker
       | gravity. (Or is it faster?)
       | 
       | Anyway, what time was this taken?
        
         | pdonis wrote:
         | I think the clocks on board Orion are set to Houston time,
         | which would be 5 hours behind UTC (because of Daylight Saving).
         | But I'm not sure. I would expect the EXIF time to be in
         | whatever time zone the spacecraft's clocks are set to.
         | 
         |  _> clocks tick slower under the moon 's weaker gravity. (Or is
         | it faster?)_
         | 
         | Compared to clocks at rest on Earth, clocks on board Orion
         | right now are ticking faster, because it's at a high enough
         | altitude above the Earth that the faster ticking due to higher
         | altitude outweighs the slower ticking due to speed relative to
         | the Earth.
         | 
         | That will be true for most of the mission. For clocks in orbit
         | about the Earth, the "breakeven point" where the altitude
         | effect and the speed effect cancel out and the clock ticks at
         | the same rate as an Earth clock is at, IIRC, about 1.5 Earth
         | radii. So clocks on the ISS, for example, tick _slower_ than
         | Earth clocks; but clocks on the GPS satellites (orbiting at 4.2
         | Earth radii) tick faster (and there is an adjustment made for
         | this on each satellite so that the time signals they send out
         | match Earth clock rates).
         | 
         | For a spacecraft moving at escape velocity, which is going to
         | be roughly true for Orion all the way until splashdown, I think
         | the "breakeven point" is higher, at a little over 2 Earth
         | radii. Orion will reach that point on the way back a few hours
         | before splashdown, I think.
         | 
         | The Moon's gravity well is too shallow to make an appreciable
         | difference in any of these calculations.
         | 
         | I should emphasize that all these tick rate effects are tiny,
         | on the order of one part in a billion to one part in a hundred
         | billion. Even when you add up the difference over the entire
         | mission, it's still only on the order of hundreds of
         | microseconds (i.e., the astronauts end up aging a few hundred
         | microseconds more than people who stayed on Earth).
        
           | swores wrote:
           | > _So clocks on the ISS, for example, tick slower than Earth
           | clocks; but clocks on the GPS satellites (orbiting at 4.2
           | Earth radii) tick faster (and there is an adjustment made for
           | this on each satellite so that the time signals they send out
           | match Earth clock rates)_
           | 
           | I'm curious, and hope you or somebody else might be able to
           | answer this: is it a single adjustment for each thing, where
           | they just set it to always adjust by X ratio, or does it vary
           | (enough to matter) as it orbits, such that the adjustment
           | needs to be constantly varying slightly?
        
             | pdonis wrote:
             | The exact difference in clock rates is not constant,
             | because the orbits are not perfectly circular and the Earth
             | is not a perfect sphere. So both the altitude and speed of
             | the satellite, and the Earth's gravitational potential, are
             | varying with time, and that means the clock adjustments
             | will vary with time as well.
             | 
             | For the GPS satellites, their time signals are constantly
             | compared with ground clocks, and adjustment signals are
             | sent up to the satellites as needed to keep their clock
             | corrections in sync with ground clocks.
             | 
             | I'm not sure what, if any, adjustments are made to clocks
             | on the ISS, or how they're done.
        
               | swores wrote:
               | Thanks! I figured the orbital paths not being exact
               | circles meant they'd be slight variance in the
               | difference, just wasn't sure if it was enough to matter
               | or if they could treat it as if it was exactly the same
               | all the way around without it mattering.
        
         | throw_await wrote:
         | Line 30 of the exif dump in the gist linked above gives an
         | offset of -05:00
        
       | Rodmine wrote:
       | Once video models get better, hope we can also see some videos.
        
       | bytesandbits wrote:
       | here the original NASA photos at high resolution without
       | unnecessary ads.
       | 
       | https://www.nasa.gov/gallery/journey-to-the-moon/
        
       | joebig wrote:
       | https://artemis-tracker.netlify.app/
        
         | joebig wrote:
         | https://www.nasa.gov/image-article/hello-world/
        
       | Uptrenda wrote:
       | That picture of the "dark" Earth is most fascinating because
       | everyone has seen a million images of Earth before, but how many
       | have seen it in this view. The image by itself says a little
       | about the Earths place in the planetary system.
        
       | mrcwinn wrote:
       | A beautiful reminder of what's possible with photography when
       | you're using more than a comparatively crappy iPhone Pro Max
       | camera. (Oh and taking the shot from Outer Space.)
        
       | Helmut10001 wrote:
       | The comparison pictures look like there is more dust in the air
       | today. They don't explain this effect, so I assume it is related
       | to time of day the photo was taken, or camera settings, not
       | actual dust accumulation compared to 1972. However, the direct
       | comparison gives the impression they want people to interpret
       | like the air is getting dirtier?
        
       | Arpitbhalla wrote:
       | just curious to know why is there no dark on opposite side if sun
       | is another side?
        
       | picafrost wrote:
       | This is all we've got. We need to do a better job of preserving
       | it.
        
         | Xiol wrote:
         | Unfortunately that would affect shareholder value.
        
         | hermannj314 wrote:
         | One of the objectives of the Artemis missions is to prepare for
         | Mars travel, none of the objectives of Artemis are to view
         | Earth as the only planet we have nor to preserve it.
        
           | Bloating wrote:
           | You must be a capitalist pig with trump delusion, lol! This
           | point of artemis is to prove the earth is flat. the picture
           | proves it! I downvote thee!
        
             | hermannj314 wrote:
             | Proving the Earth is flat is not one of the stated goals of
             | the Artemis program which is to establish a permanent base
             | on the moon to prepare for deep space exploration.
             | 
             | https://en.wikipedia.org/wiki/Artemis_program
        
         | throwaway2037 wrote:
         | > We need to do a better job of preserving it.
         | 
         | I reject this sentiment. Ask anyone that you know who lived
         | through the 1960s in a rich country. Their experience is nearly
         | all the same: The air quality and environmental pollution was
         | appalling. When my mother lived in Manhattan (New York City) in
         | the 1960s, she would return home from work, and wipe her face
         | with a cloth. The cloth had black streaks from all the
         | pollution. Today, it is a different world in rich countries.
         | They have cleaned up.
         | 
         | Finally: Yes, global warming is real, but the threat is
         | different. I predict that we will far exceed the average
         | increase in global average temperature, but we will survive.
         | Yes, we will survive, but with some "scars".
        
           | kzrdude wrote:
           | We have done a lot better with faster and readily perceptible
           | environmental problems.. from air pollution in China to acid
           | rain killing forests and lakes in Europe. So yes, we should
           | celebrate our successes too.
        
       | deepsun wrote:
       | Where are the turtles?
        
       | chistev wrote:
       | This picture wasn't taken from far away, but I thought about that
       | quote from Carl Sagan -
       | 
       | Look again at that dot. That's here. That's home. That's us. On
       | it everyone you love, everyone you know, everyone you ever heard
       | of, every human being who ever was, lived out their lives. The
       | aggregate of our joy and suffering, thousands of confident
       | religions, ideologies, and economic doctrines, every hunter and
       | forager, every hero and coward, every creator and destroyer of
       | civilization, every king and peasant, every young couple in love,
       | every mother and father, hopeful child, inventor and explorer,
       | every teacher of morals, every corrupt politician, every
       | "superstar," every "supreme leader," every saint and sinner in
       | the history of our species lived there-on a mote of dust
       | suspended in a sunbeam.
       | 
       | The Earth is a very small stage in a vast cosmic arena. Think of
       | the endless cruelties visited by the inhabitants of one corner of
       | this pixel on the scarcely distinguishable inhabitants of some
       | other corner, how frequent their misunderstandings, how eager
       | they are to kill one another, how fervent their hatreds. Think of
       | the rivers of blood spilled by all those generals and emperors so
       | that, in glory and triumph, they could become the momentary
       | masters of a fraction of a dot.
       | 
       | Our posturings, our imagined self-importance, the delusion that
       | we have some privileged position in the Universe, are challenged
       | by this point of pale light. Our planet is a lonely speck in the
       | great enveloping cosmic dark. In our obscurity, in all this
       | vastness, there is no hint that help will come from elsewhere to
       | save us from ourselves.
       | 
       | The Earth is the only world known so far to harbor life. There is
       | nowhere else, at least in the near future, to which our species
       | could migrate. Visit, yes. Settle, not yet. Like it or not, for
       | the moment the Earth is where we make our stand.
       | 
       | It has been said that astronomy is a humbling and character-
       | building experience. There is perhaps no better demonstration of
       | the folly of human conceits than this distant image of our tiny
       | world. To me, it underscores our responsibility to deal more
       | kindly with one another, and to preserve and cherish the pale
       | blue dot, the only home we've ever known.
       | 
       | https://www.rxjourney.net/30-things-i-know
        
       | trimethylpurine wrote:
       | >The burn took the Orion spacecraft out of Earth orbit...
       | 
       | No it didn't. That would be catastrophic and likely fatal. They
       | are going to the Moon, which is also in Earth orbit.
        
       | 14 wrote:
       | I often think about what an amazing time it is to be alive and
       | how amazing all the tech we have at our fingertips is. But I am
       | also incredibly saddened by the fact that I was probably born
       | just shy of routine space travel. I can not even imagine how
       | amazing it would be to look down on earth and see it in its
       | entirety. Hopefully my kids or my grandkids will be able to
       | achieve my dream and do exactly that.
        
         | 0x1ceb00da wrote:
         | If you had routine space travel, you would be upset that you
         | can't time travel.
        
       | Vincsenzo wrote:
       | What is that bright star like object on the bottom right? Is it
       | Venus? I'm guessing it's Venus because it's much brighter than a
       | star would be.
        
         | qingcharles wrote:
         | NASA confirmed it is Venus, yeah.
        
       | polskibus wrote:
       | Why is the old image so much more blue? Did pollution increase
       | cause this change in color over time?
        
         | alex_duf wrote:
         | One was taken during daylight on film, which needs to be
         | processed and scanned, the other one was taken at high ISO
         | during night time on a digital camera.
         | 
         | So much interpretation is done on colour on each step of the
         | way that it's not surprising the colours are looking different.
        
       | isoprophlex wrote:
       | https://www.reddit.com/r/3DS/comments/1sakb3v/artemis_ii_lau...
       | 
       | The launch, shot on a Nintendo 3DS.
       | 
       | For those with a gen z-like retro tech streak.
        
         | generj wrote:
         | What a mad idea.
         | 
         | The aesthetic ended up pretty cool but I can't imagine the
         | thought process that lead to capturing the launch on a 3DS.
        
       | anticrymactic wrote:
       | Unsurprisingly this is also today's Astronomy Picture of the Day
       | (APOD)
       | 
       | https://apod.nasa.gov/apod/ap260404.html
        
       | tom-blk wrote:
       | Very cool
        
       | pluc wrote:
       | Why is spectacular in quotations? I keep seeing this in
       | headlines, is it because they're quoting a single word?
        
         | tantalor wrote:
         | It's lazy "editorializing"
        
           | jameshart wrote:
           | Quite the opposite.
        
         | not_a_bot_4sho wrote:
         | Yes
        
         | jameshart wrote:
         | It's a BBC journalistic standards thing; the BBC doesn't want
         | to express an opinion about the image, they are relaying that
         | as a quote from someone about the image. The word "spectacular"
         | is attributed to NASA in the article.
        
       | tim333 wrote:
       | I was trying to figure the country - I think north Africa upside
       | down and Spain
       | https://earth.google.com/web/@3.88879526,-24.75819914,62.068...
        
         | Defletter wrote:
         | It's one of those stark reminders that there's no such thing as
         | up or down in space, and something that disabuses me of the
         | notion that I can truly comprehend "the enemy gate is down".
        
       | fanatic2pope wrote:
       | Very cool. Along the same lines the EPIC::DSCOVR mission has been
       | taking photos of the earth since, I believe, around 2015.
       | 
       | https://epic.gsfc.nasa.gov/
        
       | pclowes wrote:
       | Pale Blue Dot subtly shaped my perception of Earth.
       | 
       | We are not standing on earth looking up at the stars.
       | 
       | We are being held by earth as we look down into an infinite abyss
       | of death.
       | 
       | Everything we are depends on that fragile bubble holding us.
        
       | djfobbz wrote:
       | But why not film everything like skydivers do in 8K 120fps from
       | every angle and live stream it? After all, it is 2026...and near-
       | Earth missions like the Moon can now support hundreds of Mbps
       | (even approaching Gbps with laser communication). In the age of
       | live streaming, wasn't this taken into account? All we got is a
       | choppy 480p video feed, if that.
        
       | diyseguy wrote:
       | Gotta love the sarcastic quotes
        
       | skyskys wrote:
       | WOW!!!!
        
       | egeozcan wrote:
       | Dear some very-rich person, please send a selfie-camera to the
       | space! Yes, all that effort so we can keep looking at ourselves
       | on a planet scale.
        
         | MengerSponge wrote:
         | Good news! We already have that! If you pay taxes to the US
         | that's one of the thing you've helped pay for:
         | 
         | https://www.nesdis.noaa.gov/imagery/satellite-maps
         | 
         | For reasons that are unexplainable if you're the NYTimes,
         | polluting industries have been trying to kill these missions
         | for decades.
        
           | egeozcan wrote:
           | I'm not a US resident but I'm immensely disappointed in
           | myself because I didn't know this existed.
           | 
           | I guess the rich person who was just planning to respond to
           | my request needs to find another thing to spend their money
           | on :)
        
         | TimByte wrote:
         | It sounds trivial, but perspective shots like this are part of
         | why public support for space programs exists at all
        
       | TimByte wrote:
       | It's kind of wild how every generation gets its own "Blue Marble"
       | moment. Technically we've seen Earth from space a million times
       | by now, but every new human perspective still hits differently
        
       | Fairburn wrote:
       | Nothing spectacular about it. Except for the obvious degradation
       | of our planet, there isnt anything special about it. Its just our
       | home.
        
       | basicallyyeah wrote:
       | 1D smol brains: "Fckin flat erthers lolll"
       | 
       | 2D midbrains: "It's Africa and Spain, I can tell you because of
       | my superior knowledge of geography! Are you impressed yet"
       | 
       | 3D minds of men: "Godspeed you brave soldiers"
       | 
       | 4D Galaxy brains: "Israel did 911, all this space shit is a front
       | for making bombs and rockets, nobody knows where we came from or
       | what happens when we die"
        
       | skc wrote:
       | It's humbling to see this image. I can't even begin to imagine
       | what it must feel like to see this from the perspective of those
       | astronauts.
        
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