ALMA captures surprising activity in comet C/2014 UN271, Bernardinelli-Bernstein comet, the largest ever detected.

The mysterious cloud of space rocks and debris at the edge of the solar system may have spiral arms, making it resemble a mini galaxy, a new study says. The Oort cloud is a theoretical debris shell at ...

Comet Lemmon will have its closest brush with Earth on or around Tuesday, Oct. 21. Comet SWAN should have its flyby with ...

New research may shine a light on part of outer space's great mysteries: the Oort Cloud. The Oort Cloud is the name given to a theorized group of potentially trillions of icy objects on the edge of ...

The Oort cloud is traditionally thought of as a vast shell of perhaps trillions of icy objects encasing our solar system, serving as the final boundary between us and the dark reaches of interstellar ...

A star is heading toward the outskirts of our solar system, and it’s getting here sooner than expected.Gliese 710, a rogue dwarf star, is now estimated to brush past our solar neighborhood in just ...

Could a lonely planet wander aimlessly through the restless galaxy change the subtle dance of gravity within our solar system ...

The monstrous 85-mile-wide comet C/2014 UN271 is the second most distant body originating from the Oort Cloud found to be chemically active. Astronomers have discovered that the largest comet from the ...

If you’re wondering about the sunny view from the Oort Cloud, that vast sphere of debris that surrounds our solar system, here it is. As we told you yesterday, scientists now believe this remote, cold ...

Two bright green comets are streaming through the skies and are visible to skygazers in the Northern Hemisphere ...

The solar system is composed of the sun, eight major planets, five dwarf planets, over a hundred moons, and countless comets ...