There may be a warp in the Kuiper Belt, possibly caused by “Planet Y” — a Mercury-to-Earth-sized world that orbits the sun way beyond the orbit of Neptune. Is there a mysterious “Planet Y” orbiting ...

CAPE CANAVERAL, Fla. - Chalk up one more moon for Neptune. NASA announced the discovery of Neptune's 14th moon Monday. The Hubble Space Telescope captured the moon as a white dot in photos of Neptune ...

Astronomers may, for the first time, be confirming an exomoon in our universe, much like our moon, but outside our solar system. This marks an intriguing revelation for space discovery, considering ...

Using the Transiting Exoplanet Survey Satellite (TESS) and High Accuracy Radial velocity Planet Searcher for the Northern Hemisphere (HARPS-N), an international team of astronomers has discovered a ...

Astronomers studying the distant reaches of our Solar System have identified an unusual trans-Neptunian object (TNO) locked in a rare orbital configuration with Neptune. The object, discovered through ...