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One could also feel a moonquake while looking at an earthrise.
by archiepeach 3y ago
One could also feel a moonquake while looking at an earthrise.
- thaumasiotes 3y agoHow would one view an earthrise?
- _moof 3y agoBy going to the moon.
- thaumasiotes 3y agoDid you miss a step? The moon doesn't have earthrises.
- _moof 3y agoomg, I'm an idiot sometimes. It's a wonder they let me anywhere near spacecraft.
- deleted 3y ago[deleted]
- dplavery92 3y agohttps://en.wikipedia.org/wiki/Earthrise https://en.wikipedia.org/wiki/Earthrise
- xcv123 3y agoThat's only from orbit. The Moon is tidally locked to Earth, so Earth remains in roughly the same spot in the sky.
- adastra22 3y agoIt has a wobble. Near the limb or poles you would see an earthrise. This is shown in the beginning of the second season of For All Mankind btw.
- hinkley 3y agoKim Stanly Robinson also hits on this in Red Moon. Someone is emotionally invested in having a particular plot of moon where the earth peeks out through a gap in a crater wall during the wobble.
- purpleflame1257 3y agoIt does, but they are not the same as moonrises from earth.
- thaumasiotes 3y agoSure, in the sense that the Earth can never leave a small fixed area of the sky, that area of the sky generally doesn't include the horizon, and the Earth cannot be seen to move at all except over very long periods of time. In other words, not only are they not the same, they are not similar in any way, nor is "rise" an applicable term.
- downWidOutaFite 3y agoThere is some wiggle in the tidal lock so you could get an earthrise near the edge of the dark side.
- pklausler 3y agoFar side, you mean.
- lolinder 3y agoThey're probably referring to this photo [0]. This effect was actually due to the fact they were on the spacecraft in motion, but it's apparently possible to have an earthrise near the edges of the Earth-visible portion of the moon, because the Moon isn't completely stationary relative to earth: > Because the Moon is tidally locked with the Earth, one side of the Moon always faces toward Earth. Interpretation of this fact would lead one to believe that the Earth's position is fixed on the lunar sky and no earthrises can occur; however, the Moon librates slightly, which causes the Earth to draw a Lissajous figure on the sky. This figure fits inside a rectangle 15°48' wide and 13°20' high (in angular dimensions), while the angular diameter of the Earth as seen from Moon is only about 2°. This means that earthrises are visible near the edge of the Earth-observable surface of the Moon (about 20% of the surface). Since a full libration cycle takes about 27 days, earthrises are very slow, and it takes about 48 hours for Earth to clear its diameter. [0] https://en.wikipedia.org/wiki/Earthrise https://en.wikipedia.org/wiki/Earthrise
- tejtm 3y agoof course does, it is just mostly stationary. so to view it in motion you have to move yourself from the far side to the nearside