The cryovolcanic "centaur" comet 29P/Schwassmann-Wachmann has erupted four times in less than 48 hours, becoming unusually ...

A new study suggests that the planet’s icy interior and liquid ocean could be insulated with a three-to-six-mile-thick layer ...

A dwarf planet hiding right in the middle of our solar system could be a surprising source of frozen water, astronomers reveal. A new study finds that Ceres, which sits in the asteroid belt between ...

Hale-Bopp originated in the Oort Cloud, a theoretical shell of icy planetesimals surrounding the sun in the outer reaches of ...

Underneath the icy, rocky surface of asteroids – such as the 16 Psyche which is about 124 miles wide – there’s an estimated ...

The space agency defied incredible odds to get its asteroid-hunting OSIRIS-REx spacecraft off the ground. Since then, the mission has upended everything we know about our solar system.

Pieces of the asteroid Bennu, collected by NASA’s OSIRIS-REx mission, are being studied at Brown as part of an effort to ...

The long-period comets spend most of their time at those ... Oort speculated the cloud contained 100 billion of these icy objects. That may be as numerous as the number of stars in our galaxy.

Like an asteroid, a comet orbits the sun. The latter is a ball of ice, dust, and rock that formed in the outer solar system. These icy bodies are left over from the early days of planet formation, ...

Saturn's Moon Titan Has Insulating Methane-Rich Crust Up to Six Miles Thick Oct. 25, 2024 — A new study has revealed that methane gas may be trapped within the icy surface of Saturn's moon Titan ...

NASA has released a new edition of Issue 4 of the Astrobiology Graphic History series. The issue now includes NASA's Europa ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A comet nicknamed ...