As mankind was planning the first moon landing in the 1960s, an asteroid approached Earth—and still hasn’t left.

The discovery of quasi-moon PN7 has caused a stir on social media. A University of Oregon astronomy professor explains. what ...

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 world, dubbed GJ 251 c, sits 19.6 light-years from Earth and appears to be almost four times our planet’s mass — a “super ...

Astronomers have unveiled a new catalog of massive galaxy clusters, revealing new insight on the evolution of the universe ...

Earth has welcomed a new temporary mini-moon, asteroid 2025 PN7, a 62-foot object now orbiting our planet for decades. This ...

The mini-moon/asteroid will only be joining Earth's orbit temporarily before it returns to its other orbital path.

This quasi-moon is expected to remain in its current near-Earth orbit for about another 60 years before the gravitational tug ...

Researchers discovered a hidden 185,000 light-year "bridge" of gas between two distant galaxies, which are also trailed by a ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers from the University of California, Irvine (UCI) and ...