[HN Gopher] Footage of Chang'e-6's land on far side of the moon
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Footage of Chang'e-6's land on far side of the moon
Author : xnhbx
Score : 97 points
Date : 2024-06-02 13:54 UTC (9 hours ago)
(HTM) web link (www.cnsa.gov.cn)
(TXT) w3m dump (www.cnsa.gov.cn)
| m_a_g wrote:
| Is the footage fast-forwarded? I'd imagine landing to be much
| slower.
|
| Also, is that how the moon looks, or is this some kind of night
| vision?
| fernandopj wrote:
| Definitely. You can see the lander "breaking" to adjust fall
| trajectory twice, the actual burst wouldn't be that fast.
| beefnugs wrote:
| camera footage taken in space is something weird indeed. I
| remember when i first saw how an eclipse affects shadows in
| real life. It immediately clicked in my brain why that early
| moon landing footage looked how it did. And also how easily so
| many people thought it was fake
| guerrilla wrote:
| Can you elaborate?
| luyu_wu wrote:
| Shadows become incredibly sharp for instance, causing
| everything to look like it's rasterized in software!
| Toutouxc wrote:
| It looks exactly like on the first Apollo photographs.
| Guess they must've hired Kubrick's students. Jokes aside,
| there's just one light source on the moon, and no
| atmosphere to provide diffuse light. The dynamic range
| (contrast) of the moon is something we don't see often on
| Earth.
| qingcharles wrote:
| And the lighting makes it really hard for the camera to
| see any stars, so the sky always looks deep black and
| fake which also adds to all those frustrating conspiracy
| theories.
| logtrees wrote:
| Amazing work Chang'e-6 team, amazing work China! Congratulations!
| seatac76 wrote:
| Good stuff. Very consistent program to moon they have there.
| gcanyon wrote:
| Nice work, go team human! From
| https://en.wikipedia.org/wiki/Chang'e_6
|
| "If the mission is successful, China will become the first nation
| to land, collect, and deliver samples back to Earth from the far
| side of the Moon."
| The_Colonel wrote:
| Your second sentence (even of it's a citation) makes this about
| competition, kinda negating the message of your first sentence.
| mef wrote:
| competition within teams can be a good thing
| SoftTalker wrote:
| I don't think anyone is really competing for this achievement
| right now. If I'm running a race with no other competitors,
| can I claim to have finished first? Or even to be racing?
| tromp wrote:
| At 0:28 you can see a brief glimpse of part of Chang'e-6 itself.
| pavel_lishin wrote:
| I can't tell if that's part of the ship, or its shadow:
| https://i.imgur.com/NTiZuJe.png
| jameshart wrote:
| Translations matter. There's rather an important semantic
| distinction between claiming a 'landing' on the moon vs claiming
| 'land' on the moon.
|
| Currently the headline on HN reads "Footage of Chang'e-6's land
| on far side of the moon"
| Dalewyn wrote:
| Looks like a bad translation, it's not even proper English.
|
| NHK reports[1] that China announced Chang'e-6 "landed" (Zhao Lu
| , chakuriku) successfully on the far side of the Moon.
|
| [1]:
| https://www3.nhk.or.jp/news/html/20240602/k10014468871000.ht...
| tectonic wrote:
| Super cool! We have been tracking this mission in Orbital Index
| for a while.
| https://orbitalindex.com/archive/2024-03-13-Issue-260/#chang...
|
| This mission required a communication satellite that loiters on
| the far side of the Moon as well to relay communications back to
| earth.
| https://orbitalindex.com/archive/2024-03-13-Issue-260/#queqi...
| qingcharles wrote:
| Love Orbital Index... just realized I stopped getting emails
| from you guys in 2022 :( Does it auto-unsubscribe if I don't
| open one for a while? I was away from the Internet for a few
| months.
| MaximilianEmel wrote:
| It starts looking like a fractal halfway through.
| mmcconnell1618 wrote:
| You can't really tell the scale of the craters because each
| time you get closer, more craters appear. I can imagine that
| even with stereoscopic eyes, a human could easily misjudge
| distance and scale too. We're not used to operating in such a
| barren environment.
| oefrha wrote:
| The video element didn't work for me on iOS Safari for some
| reason. Anyway here's the direct link to the video:
| https://www.sastind.gov.cn/video/0602ce6dl2.mp4
| punk_ihaq wrote:
| So cool! At 0:28, you can briefly see the shadow of one of the
| landers legs about to touchdown
| uncertainquark wrote:
| If anyone's interested, I did a deep dive into the Chang'e 6
| mission, including clarifying some misconceptions:
| https://jatan.space/moon-monday-issue-174/
| ammo1662 wrote:
| The "video" is not actually a video. It is composed by a series
| of images. So yes the video is fast-forwarded.
|
| And the probe will hover above the landing area and use a laser
| to detect the surface to choose the landing point. It can be seen
| in the video.
| mdrewry wrote:
| true, but aren't all videos just individual frames played in a
| sequential order?
| ammo1662 wrote:
| Yes, you are correct. Sorry for misleading about that.
|
| I saw some comments that due to the limited bandwidth of the
| relay satellite, these images were taken every second. So it
| is actually not a "video".
| derjames wrote:
| technically, it is a "video" at 1fps
| Simon_ORourke wrote:
| Great work, I'm curious as to how autonomous the landing was (I
| assume fully autonomous) - but since there's awesome video sent
| back from the dark side of the moon there must be some relay in
| orbit too.
|
| I'd give the Chinese space program more than a healthy 50/50
| chance of landing humans on the moon again within the next ten
| years.
| ein0p wrote:
| I consider this unlikely - it is at least an order of magnitude
| harder to land people there and get them back even if you
| already have the heavy rockets and experience required. The US
| remains the only country capable of repeating this feat within
| the next 10 years, in spite of the current timelines being
| ridiculously unrealistic, simply because it doesn't have to
| guess quite as much and either already has or in the advanced
| stages of building the necessary technological base.
| binary132 wrote:
| I'm not convinced even the US is actually capable of that.
| ein0p wrote:
| It's the only country that landed people on the moon like
| twice a year. Sure, that was 50 years ago, but some of
| those old timers are still around.
| JumpCrisscross wrote:
| > _not convinced even the US is actually capable of that_
|
| Then you haven't been paying attention to American
| aerospace over the past decade and a half. It is _far_ more
| capable today than it was in the 60s, particularly in
| robotics.
|
| Where we lag is in human space flight, in part due to
| bureaucracy and complacence among the majors, in part
| because we have ridiculously-high safety standards.
| elzbardico wrote:
| I don't believe current day USA will be able to go back to
| the moon. The decadence and corruption are accelerating.
| ein0p wrote:
| Corruption merely makes things much more expensive. That is
| not really a concern to a country that can issue $3T in
| debt every year. Nor is "decadence": within a decade SpaceX
| could do it on its own, without NASA.
| spookie wrote:
| While I agree with the second point, let's be honest:
| SpaceX has had a lot of help from NASA.
| MaxPock wrote:
| And then you remember the Wolf Amendment that was enacted to hold
| back Chinese space efforts and you laugh . According to this
| American law ,NASA is not supposed to be in contact with the
| Chinese government or Chinese government affiliated
| organizations.
| overstay8930 wrote:
| It was just to delay missile development as Chinese affaires
| were caught gathering information for non-scientific endeavors,
| anyone with half of a brain knows that China was going to do
| this eventually.
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