2007-01-09 13:19:21 · 4 answers · asked by scantu77 1 in Science & Mathematics ➔ Astronomy & Space
27.3 days - the same amount of time that it takes the Moon to orbit once around the Earth. The fact that the Moon rotates exactly once in the same time it takes to orbit once is why we always see the same side of the Moon. This type of situation is called "tidally locked."
It takes the Moon a little longer to completely go through its phases because the Earth is also oribiting the Sun, and the Moon has to go further to have the same angle between it, the Sun, and the Earth. (which is what determines the phase) This period is the synodic period in the first source listed below.
2007-01-09 13:30:17 · answer #1 · answered by ZeroByte 5 · 0⤊ 0⤋
Both the rotation of the Moon and its revolution around Earth takes 27 days, 7 hours, and 43 minutes.
The Moon makes a complete orbit about once a month.
2007-01-09 13:50:59 · answer #2 · answered by leocham 1 · 1⤊ 0⤋
The same side of the moon always faces the earth, so it takes the same as one complete revolution around the earth. That is approximately 28 and 1/2 days.
2007-01-09 13:24:52 · answer #3 · answered by sparbles 5 · 1⤊ 0⤋
I think is 672(not sure)www.nasa.gov
2007-01-09 13:25:32 · answer #4 · answered by Ballieres 1 · 0⤊ 0⤋