If you were on the Moon, how long would it take between two crossings of a star in the sky through your zenith?

Question

Quizplus · Accepted Answer

The Moon does rotate on its axis, but it takes exactly the same amount of time to complete one rotation as it does to orbit the Earth. This means that from the Moon's surface, the same side of the Moon always faces the Earth. As a result, stars would not appear to move across the sky like they do on Earth. Instead, they would remain fixed in the same position relative to the Moon's surface. Therefore, it would take exactly one orbit of the Moon (which takes 27.3 days) for a star to cross through your zenith again.

If You Were on the Moon, How Long Would It