Using data collected by NASA's Juno spacecraft as it flew past Jupiter's highly volcanic moon Io in late 2023 and again in ...

Europa, one of Jupiter’s intriguing moons, is hiding an ocean beneath its icy shell — an ocean that might harbor alien life.

A huge haul of 128 newfound satellites might be a hint of past collisions in the planet’s orbit, or something else.

Saturn has decisively claimed the crown. With the discovery of 128 new moons, the ringed planet’s total count has soared to 274 — nearly twice as many as all other planets combined. Jupiter now trails ...

"It's like a game of billiards around the solar system, flying by a couple of planets at just the right angle and timing to ...

Astronomers have discovered a panoply of new moons orbiting Saturn, bringing the ringed gas giant's total up to 274 moons—far ...

The smashups are thought to have occurred at least 100 million years ago, but the moons they created are new to astronomers.

A UVA professor is part of the study of Trojan asteroids, presumed remnants of the early solar system that share Jupiter’s ...

The world’s premier space observatory has spotted a mysterious and huge, free-floating planetary-mass object that’s “just 20 ...

Lucy is preparing for a close encounter with the asteroid Donaldjohanson, a key milestone before its groundbreaking journey ...

If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

Astronomers using the James Webb Space Telescope have discovered complex atmospheric shifts in SIMP 0136, a free-floating ...