So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't been for lack of trying. According to a new paper by Thomas Winterhalder of ...

Neptune has a complicated life story, and its moon Nereid might be the only one left standing from the planet’s ...

A recent study published in Science Advances suggests that Neptune’s moon Nereid may be the last surviving original moon of ...

Nereid was discovered by Dutch astronomer Gerard Kuiper, who named the moon after the sea nymphs in Greek mythology ...

Astronomers surveying the outer solar system have revealed that a rare object far beyond Neptune is moving in sync with the eighth planet in an unexpected way. Called 2020 VN40 and first discovered in ...

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying ...

TEMPE, Ariz. a Quick: What’s the order of the planets in the solar system? Need a little help? Maybe the following mnemonic rings a bell: “My Very Educated Mother Just Served Up Nine Pizzas.” It’s ...

Astronomers have found that a weird space rock at the edge of the solar system is locked in a rhythmic dance with Neptune. The object, designated 2020 VN40, is part of a family of distant solar system ...

Using data from the Webb space telescope, a team of researchers is suggesting that Neptune’s moon Nereid is the only survivor ...