An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Astronomers anticipate an unprecedented view of the solar system as the Rubin Observatory begins to scan millions of hidden celestial objects.

By Jacopo Prisco, CNN (CNN) — An accidental discovery might change how we think about one of the most mysterious structures in our solar system. The Oort Cloud, a large expanse of icy bodies ...

(CNN) — An accidental discovery might change how we think about one of the most mysterious structures in our solar system. The Oort Cloud, a large expanse of icy bodies revolving around the sun ...

By Jacopo Prisco, CNN (CNN) — An accidental discovery might change how we think about one of the most mysterious structures in our solar system. The Oort Cloud, a large expanse of icy bodies ...

Could a rogue star disrupt our peaceful solar system? Scientists are keeping a close eye on the galactic neighborhood, and ...

It's composed of leftovers from the making of our solar system, which were scattered in every direction by the planets after they formed. That means many of the icy bodies in the Oort Cloud don't ...

The Solar System might not be as quiet and orderly as we think. Imagine one day looking up and seeing something strange in ...