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 ...

Quasi-moons are not real moons and don't actually orbit the Earth, although they sometimes appear to do so for short periods of time, Phil Nicholson, professor of astronomy at Cornell University, told ...

The Moon is getting 1½ inches (3.8 centimeters) farther away from the Earth every year. Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and ...

The moon will appear slightly larger and brighter Monday night during what's known as a supermoon. October's supermoon is the first of three this year. It happens when a full moon is closer to Earth ...