Despite the newcomer, Earth still has just one true moon. NASA says 2025 PN7 keeps its distance - about 4 million kilometers ...

Recently, astronomers detected the presence of a relatively new quasi-moon called 2025 PN7, which appears to orbit our planet ...

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 ...

An autonomous underwater glider, Redwing, launched on a five-year mission to circle the planet, gathering data to improve ...

A small asteroid has been quietly following the Earth around the sun for decades, and this "quasi-moon" is expected to stick around for a while longer before shooting off into space. The asteroid ...