Timeline for Has any human ever had the choice to leave Earth permanently?
Current License: CC BY-SA 4.0
19 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S Mar 6, 2019 at 9:58 | history | bounty ended | Muze | ||
| S Mar 6, 2019 at 9:58 | history | notice removed | Muze | ||
| Mar 5, 2019 at 9:14 | comment | added | SF. | @Mazura: As I said, the three scenarios are close enough in their predicted time, and depend on variables too little known to authoritatively choose which one will happen. Moon's escaping will definitely keep slowing down as both Earth spins down and its gravitational influence weakens with the growing distance - but a large passing asteroid could then throw the Moon out of the (flimsy by then) gravitational grip of Earth. Sun's expansion timeline is very poorly estimated, so if the Moon isn't ripped out of Earth's orbit it will begin spiralling down. How long? Hard to tell. | |
| Mar 1, 2019 at 0:13 | comment | added | Mazura | @SF. - Apparently you are correct (... probably). Will The Moon Ever Stop Drifting Away From Earth? – Forbes/Quora | |
| Feb 28, 2019 at 7:31 | comment | added | SF. | @Mazura: The energy pumped into the Moon to raise its orbit comes from slowing down Earth spin. And once that matches Moon's orbital period, the "escape" will stop and the direction will reverse as other tidal forces dissipate the energy. | |
| S Feb 28, 2019 at 4:33 | history | bounty started | Muze | ||
| S Feb 28, 2019 at 4:33 | history | notice added | Muze | Draw attention | |
| Feb 28, 2019 at 0:29 | comment | added | Mazura | The end of the linked article ends with, 'but maybe not, in at least two different ways'. And "is an unpublished byproduct of her research" - great. Show me the codez! To answer my own question: supposedly by drag from the expanded sun. (and, no, I didn't read it; I just read titles :) | |
| Feb 28, 2019 at 0:23 | comment | added | Mazura | @SF - where are you getting this? We're loosing our moon at like 2.5 centimeters a year or something. How's that ever going to stop if it's outside the Roche radius? | |
| Feb 27, 2019 at 15:44 | comment | added | Cort Ammon | @MartinBonner True. There's more cut and dry phrasing of this to find humans who could have left the sphere of influence of earth and the moon. I chose this phrasing for three reasons. 1) It's more poetic. 2) It's closer to what I'm actually interested in, and 3) in phrasing this way I also opened the door up for frame challenges like SF's comment above. | |
| Feb 27, 2019 at 15:35 | comment | added | Martin Bonner supports Monica | @Mazura No. You didn't read the question. The point is that the moon (and hence everything on it) is due to fall back to earth eventually. (Although SF questions that premise). | |
| Feb 27, 2019 at 0:58 | comment | added | Mazura | Has any human ever been aboard a spaceship capable of leaving Earth's sphere of influence? ('leaving Earth permanently' has been a choice of everyone who's ever set foot on the moon) | |
| Feb 26, 2019 at 8:58 | comment | added | SF. | Just a note: the Moon getting torn to pieces is not nearly as sure as it was believed not long ago. Moon is constantly accelerated by Earth's tidal forces into increasingly higher orbit, and opinions are on the fence whether it will a) enter mutual tidal lock with Earth, then gradually spin down and get torn to pieces, b) escape Earth's gravity, c) get swallowed by expanding Sun, along with Earth before either of two other options happen. | |
| Feb 26, 2019 at 1:51 | answer | added | Lex | timeline score: 32 | |
| Feb 26, 2019 at 0:31 | vote | accept | Cort Ammon | ||
| Feb 26, 2019 at 0:00 | history | tweeted | twitter.com/StackSpaceExp/status/1100183779694559232 | ||
| Feb 25, 2019 at 18:44 | answer | added | Russell Borogove | timeline score: 74 | |
| Feb 25, 2019 at 17:38 | answer | added | peterh | timeline score: 4 | |
| Feb 25, 2019 at 17:26 | history | asked | Cort Ammon | CC BY-SA 4.0 |