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 ...

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 ...

Asteroid 2024 DW flew about 139,000 miles (224,000 km) away from Earth. The space rock was estimated to be about 43 feet wide ...

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 ...

NASA's Lunar Orbiter 1 captured the first photograph of Earth from lunar orbit on 23 August 1966, in an unplanned decision that produced one of space exploration's most iconic images. The spacecraft ...