Even the little-understood Oort Cloud, at the outer edges of our solar system beyond view, has a partly spiral structure.

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about ...

Interstellar material has been discovered in our solar system, but researchers continue to hunt for where it came from and ...

The Oort cloud is a shell of icy objects that forms the very outskirts of our Solar System. Recently, a group of researchers ...

Learn about the Oort cloud, a vast area beyond the inner solar system that is believed to contain icy objects arranged in a ...

The Milky Way's tidal forces may be shaping the Oort Cloud's inner structure into a spiral shape.

A mysterious cloud of space rock and debris in the outer reaches of our solar system might resemble a miniature galaxy, a new ...

New research suggests the Oort Cloud may have a spiral structure like a mini galaxy. Supercomputer models reveal its ...

"We found that some comets in the inner Oort cloud form a long-lasting spiral structure." Spirals are a repeating theme in ...

Groundbreaking research reveals the Oort Cloud's shape as a spiral structure, challenging traditional beliefs about its ...

Most of the long-period comets in the Solar System come from the outer Oort Cloud. The inner region is much more stable. It's ...