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 ...

Using a NASA supercomputer to run models, researchers led by SwRI astronomer David Nesvorny now believe that the Inner Oort cloud looks like a spiral disk, around 0.24 light-years across, with two ...

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

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

A comet called ATLAS dazzled the southern skies for the last few weeks. Now it's heading out of view for half a million years ...

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

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

The study of the universe is a subject that never ceases to amaze the scientific community. If being able to know what is beyond our atmosphere has been something that has always b ...

A shell of icy objects at the edge of the solar system known as the Oort cloud has a pair of spiral arms that resemble a ...

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

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it ...