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Name: Jamie
Status: other
Grade: other
Location: NV
Country: N/A
Date: N/A


Question:
Why do the planets wobble?


Replies:
Dear Jamie,

Planets have odd motions. We do know that the Earth has a very slow wobble of about 22,300 years caused probably by a gravitational tug from the Moon. This is what causes precession. Other planets might have wobbles as well, through not as mensurable as ours, because our Moon is so large compared to Earth.

Sincerely

David Levy



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