As the Moon moves around the earth sunlight shines on the Moon at different places. The clouds are moving around the earth and they move between us and the Moon. If you look at the Moon with binoculars or a telescope you will see that the holes , the bits that look like old cheese, are really craters. Everything in space moves. Our Sun, like other stars, is moving around the center of our Galaxy, the Milky Way.
Moons are in orbit around planets, again due to the force of gravity.
Many spin because they were set in motion those many millions of years ago when their planetary system was formed. It was Neil Armstrong on the 21st July 1969. Remember he also had with him, Buzz Aldrin, the second person to walk on the Moon and during their lunar walk, up above them in lunar orbit was the third member of the team, Michael Collins, in the Command Module. All three should be remembered together because no one would have landed on the Moon without the whole team sharing and co-operating. Professor STaRS 7th December 1998.