A planet twice the size of Jupiter has been confirmed in Nu Octantis. Its retrograde orbit and origin raise new questions about planetary formation in binary systems.

The research builds on existing information about Uranus, like the fact that the planet is composed mainly of water and ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...

Scientists are intrigued after spotting a highly unusual celestial object lurking at the very edge of our solar system.

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Based on 20 years of observations by NASA’s Hubble Space Telescope, new research sheds light on one of the solar system’s ...

Scientists focused on Jupiter's little moons Amalthea and Thebe. Their peculiar orbits didn't quite fit with Jupiter's ...

Webb’s powerful instruments have detected crystalline water ice in a distant star system, offering rare insight into planet ...

In a thrilling development that challenges long-held assumptions about the outer reaches of our solar system, astronomers ...

A new study proposes that seeding the orb’s underground ocean with microbes might help us learn how to make other worlds habitable ...

It’s been nearly three decades since Saturn last set up shop in the sign of the ram — and everyone will be feeling the ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...