Long ago, the Moon was much nearer Earth. Scientists believe a protoplanet collision created the Moon 4.5 billion years ago.

Tides come from a difference in gravity across an object. The force of gravity exerted by the Moon is about 4% stronger on the side of Earth that faces toward the Moon, compared to the opposite side ...

Because the Earth is doing the work of increasing the Moon's momentum, the Earth's rotation slows down in turn, as its momentum goes to the Moon. To put it another way, as the Moon's orbital momentum ...

Here are 7 lesser-known interesting facts about the moon only true selenophiles know! Read lunar secrets in this must-read trivia for moon lovers worldwide.

The next full moon will be on Monday, Oct. 6. It will officially reach its full moon phase at 11:48 p.m. EDT (0348 GMT on Oct. 7), but local moonrise times vary depending on location. The moon will ...

Moon phases reveal the passage of time in the night sky. Some nights when we look up at the moon, it is full and bright; sometimes it is just a sliver of silvery light. These changes in appearance are ...

The Moon, our constant celestial companion, is drifting away from Earth at a slow but measurable rate. According to a ...

This point is located on the extended line outside the Moon in the Earth-Moon system, where the gravitational forces of the Earth and the Moon reach a dynamic equilibrium with the centripetal force ...