Timeline for Could a flat planet form by rotation?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Nov 5, 2022 at 2:36 | comment | added | Nosajimiki | @RobertRapplean oh yes, tidal locking would be a definite issue now that I think about it | |
| Nov 4, 2022 at 22:05 | history | edited | Robert Rapplean | CC BY-SA 4.0 |
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| Nov 4, 2022 at 21:56 | comment | added | Robert Rapplean | @Nosajimiki, no, as the stars get smaller, it gets closer to the photosphere. It's like suggesting that temperature and air pressure are correlated. Mercury is currently suffering from atmospheric drag that will eventually pull it into the sun. For red dwarfs, the habitable zone is actually within the distance that results in obligate tide-locking, which would stop your whole spinning concept in far less than evolutionary time. | |
| Nov 4, 2022 at 20:21 | comment | added | Nosajimiki | @RobertRapplean I would think wherever the goldilocks zone is for any given star would have to have the same amount of solar winds at that range as an equivalent goldilocks zone on a larger star. IE: Less ambient heat and radiation means less solar wind to plow through. | |
| Nov 4, 2022 at 20:02 | comment | added | Robert Rapplean | @Nosajimiki, The problem isn't how long the star lasts, but how long before the planet falls into the star. Closer orbits suffer from orbital degradation due to constantly plowing through the solar wind. You MIGHT get this to happen if a non-binary white dwarf captured a planet after it collapsed, but not through the standard accretion process. | |
| Nov 4, 2022 at 19:58 | comment | added | Robert Rapplean | @ZeissIkon, precession was just presented as a way of getting the day/night cycle a little closer to 24 hrs without so close an orbit. He didn't request the thought in the original question. | |
| Nov 4, 2022 at 19:50 | comment | added | Nosajimiki | @ZeissIkon Are you saying the planet or the star would not last long enough for life to evolve because the smaller the star, the longer it lasts. | |
| Nov 4, 2022 at 19:19 | comment | added | Zeiss Ikon | You might be able to get a habitable zone with 24 hour orbit around a brown dwarf or deuterium dwarf (L class?) -- or maybe a white dwarf? -- but it probably wouldn't last long enough for life to evolve, surely not to sapience (at least at Earth's rate). | |
| Nov 4, 2022 at 18:04 | comment | added | Zeiss Ikon | I don't think precession is an issue -- the question mentions the day-night cycle being due to the axis remaining fixed but "annually" pointing close to the sun as Uranus does. | |
| Nov 4, 2022 at 17:39 | history | answered | Robert Rapplean | CC BY-SA 4.0 |