Because the Moon is over a quarter the diameter of Earth, the Earth-Moon system is often cited as the pairing in our Solar ...

Some of the rotational energy of the Earth is stolen by the Moon, and that is causing Earth to slow down by around 1.5 milliseconds every century. The sun is 14 magnitudes brighter than the full moon.

Reference Only 12 astronauts have walked on the moon. Discover who they are, which Apollo missions took them there, and when humans will return to the lunar surface.