Post AymawMNFpSFS83MybQ by vruz@mstdn.social
(DIR) More posts by vruz@mstdn.social
(DIR) Post #AymRroO1LwxpyLU6W8 by foone@digipres.club
2025-10-01T23:26:45Z
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Someone should make an astronomy shitpost site where the goal is to come up with a better definition of planet than the IAU, and people can vote on them and point out edge cases
(DIR) Post #AymRwQt69Fl8XYDxfE by foone@digipres.club
2025-10-01T23:27:30Z
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today's bad definition:any object in space big enough to be visible by a telescope that's not actively undergoing fusion and isn't orbiting another planet (in which case it's a moon)
(DIR) Post #AymS8IWB5mkA3bA37Y by foone@digipres.club
2025-10-01T23:29:47Z
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obvious edge cases: black holes are planets. rogue planets are planets, but so are white dwarfs and black holes. pluto arguably STILL isn't a planet, since it and charon have that barycenter orbit going on. which I think makes them both moons?
(DIR) Post #AymSC8Ix0VZvXUnqXw by foone@digipres.club
2025-10-01T23:30:16Z
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also, since moons aren't planets, a moon moon would be a planet again.
(DIR) Post #AymSPD5AYTR87banA0 by foone@digipres.club
2025-10-01T23:32:06Z
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anyway the definition would be compared against a list of known and hypothetical planets, and if two definitions both match, the shorter and simpler one is considered better.
(DIR) Post #AymSPHycMGAPIjZ88u by foone@digipres.club
2025-10-01T23:32:14Z
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we're gonna code golf this problem
(DIR) Post #AymSU4Ra6HDGmHORNo by kboyd@phpc.social
2025-10-01T23:32:28Z
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@foone obligatory:Yeet Me to the MoonMoonhttps://theoutline.com/post/6382/yeet-me-to-the-moonmoon
(DIR) Post #AymSWhqMaGt7YLF28m by foone@digipres.club
2025-10-01T23:33:52Z
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(DIR) Post #AymSmm9yIuNXZa4kz2 by Video_Game_King@digipres.club
2025-10-01T23:36:58Z
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@foone I'd be the humanities student who comes in and points out how similar this dilemma is to attempts to define religion, in that both basically come down to "how do we rework an implicit example that's familiar to us [Earth, Christianity] into a broad definition without excluding a wealth of examples that don't neatly resemble that first one in various, often mutually exclusive ways?"
(DIR) Post #AymSz4KyXvwpQN5IvY by matt5sean3@urusai.social
2025-10-01T23:39:13Z
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@foone Seems like asteroids and comets would often qualify depending on the telescope.
(DIR) Post #AymT3d8L7IzgV8Li1Q by foone@digipres.club
2025-10-01T23:39:39Z
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@matt5sean3 yeah, they're planets now.
(DIR) Post #AymTHGKGiBcVopQfQm by matt5sean3@urusai.social
2025-10-01T23:42:31Z
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@foone I don't want to live in a world where with a good enough telescope Musk would have technically launched a planet.
(DIR) Post #AymTRdeMqckz3MmIWu by foone@digipres.club
2025-10-01T23:44:27Z
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There'll be special rankings for shortest definition that still matches the IAP definition and the pre-pluto-demotion definition
(DIR) Post #AymTZ8TSdvKMgCFeaW by A_C_McGregor@topspicy.social
2025-10-01T23:45:38Z
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@foone The entire idea that Jupiter and Mercury are the same class of object is kinda silly.
(DIR) Post #AymThKlmoPpZ88jSgC by ozzelot@mstdn.social
2025-10-01T23:47:44Z
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@fooneFucking Moon Moon
(DIR) Post #AymUSKydrJYtNr9sHY by troldann@techhub.social
2025-10-01T23:55:42Z
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@foone people are gonna be submitting entries in Mandarin to have fewer characters for the same concepts, of course.
(DIR) Post #AymVna7cqUK8OG3QJM by dgelessus@mastodon.social
2025-10-02T00:09:41Z
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@foone this is practically *asking* Astronomer Diogenes to come up to you, holding some insect that sat on his telescope lens, "Behold! A moon"
(DIR) Post #AymVnbTdo7WoapMWGW by foone@digipres.club
2025-10-02T00:10:45Z
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@dgelessus exactly!
(DIR) Post #AymWZk8wtDbxN3ddw0 by UpLateGeek@bitbang.social
2025-10-02T00:19:28Z
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@foone IAP: New rule: all definitions must include “Pluto is not a planet because fuck you that’s why.”
(DIR) Post #AymXhhJtN4Kmsv77cO by foone@digipres.club
2025-10-02T00:32:05Z
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@Runner but is that point a planet?
(DIR) Post #AymZ1NB848GUABxd1E by Eliot_L@social.coop
2025-10-02T00:46:49Z
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@foone we don't talk about Pluto! https://youtu.be/YJPHK5NNtpQ
(DIR) Post #AymawMNFpSFS83MybQ by vruz@mstdn.social
2025-10-02T01:08:16Z
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@foone You mean Nature.com ? 🤣 https://www.nature.com/articles/nature24051
(DIR) Post #Aymfhrp37dV15iHN1E by retroswim@bitbang.social
2025-10-02T02:01:36Z
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@fooneMy definition is just to copy paste the IAP definition but with a clause appended that grandfathers in Pluto because "We listen, and we have heard loud and clear from your feedback....."
(DIR) Post #Aymj3ULNOZfuVUOwUK by glent@aus.social
2025-10-02T01:21:11Z
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@foone If it's not in Holst's The Planets, then by musical definition it is not a planet. [Pluto was sighted after The Planets was inspired]If you want to dispute this, show how the IAU process was a better method. "Oh, we've too many planets in the solar system and it's growing all the time. That will make the solar system 'too big'". "Why is 'too big' a problem in this era of databases?" "Well... <an appeal to social criteria>". Rather than mess about adding a layer of physics, let's just go direct to the social criteria.Also, from a planetary feelings point of view, having promoted Pluto we should have allowed Pluto to be a planet for a year. Its poor ego, promoted and demoted in under one trip around the sun.
(DIR) Post #Aymj3VAmJSn94uRzbk by foone@digipres.club
2025-10-02T02:39:13Z
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@glent yeah I've always been a fan of the "Holst's The Planets is the definitive list of planets" argument. Does it make as much scientific sense as the IAU definition? no, but it slaps.
(DIR) Post #AymzcVJDOhW6u06ovQ by happydisciple@mendeddrum.org
2025-10-02T05:44:50Z
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@foone The JUICE spacecraft is currently a planet (I think - I’d need to confirm its current orbit is indeed heliocentric) (we’ve imaged it during its gravity assists), and will become a moon later, and then become a moon-moon. Sadly, we won’t be able to image it at that point, or it would’ve become a planet again!
(DIR) Post #Ayn0rl6P3nP2BMxDyS by markymarrow@mstdn.social
2025-10-02T05:58:52Z
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@foone does this imply the existence of telescopes actively undergoing fusion ?
(DIR) Post #Ayn5R1DNXu126fHm40 by r007@mstdn.social
2025-10-02T06:50:00Z
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@foone then again, I’d imagine there are very few (other) things visible through a telescope that is actively undergoing fusion…
(DIR) Post #Ayn72C5WBMM8Uvtp0S by henryk@chaos.social
2025-10-02T07:07:54Z
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@foone @Runner No, it's not. Reason: It *is* not.
(DIR) Post #Ayn86ab36NEVceJ7b6 by trollkatt@mastodon.online
2025-10-02T07:07:45Z
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@foone is anything visible by telescopes actively undergoing fusion though?
(DIR) Post #Ayn86bve9HIrkox5LE by foone@digipres.club
2025-10-02T07:19:59Z
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@trollkatt no because the telescope will melt
(DIR) Post #Ayn8TmHFq5pkVg6cO8 by spacekatia@girlcock.club
2025-10-02T07:23:53Z
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@foone this somehow excludes some exoplanets but not others based on criteria that have very little to do with the exoplanet itself o.o
(DIR) Post #AynTbd1yCQlLBcXcye by mansr@society.oftrolls.com
2025-10-02T11:20:38Z
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@foone If the earth is flat, that's a lot of edge cases.
(DIR) Post #AypWvEiqyWlPlXYqUC by rhialto@mastodon.sdf.org
2025-10-03T11:07:16Z
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@fooneOf course rogue planets are planets, otherwise they would be called rogue not-planets.
(DIR) Post #AyptraVsJWxb8TigXg by MegaMichelle@a2mi.social
2025-10-03T15:24:22Z
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@foone JWST is at Earth-Sun L2, so it's in orbit around the sun, not the Earth. JWST is a planet!