alias25
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i heard the moon is moving away from us, does that mean its orbital speed has increased? how will that affect the rotational speed of Earth on its axis? slower?
Garth said:The Earth's rotational energy is thus transferred to the Moon's orbital energy. Eventually the Earth will always have the same 'face' turned towards the Moon, as already the Moon's nearside 'face' is always turned towards the Earth.
Plastic Photon said:I am no expert but I am quite certain that the moon orbits the Earth eliptically which means it has a perigee and an apogee.
No - these orbital changes are tiny. However in the very far future the Moon will very slowly move back towards the Earth and - if it is still in existence then - the Moon will approach inside the Earth's Roche limit and disintegrate. The Earth may then end up moonless but with a beautiful set of Saturn-like rings!Quan Chi said:What happens if the Moon is moving too far from us? Could it lose the orbit, start wandering around and crash some other planet? Or even Earth?