We typically think of the Oort cloud as scattered ice balls floating far from the sun, yet still tied to it gravitationally.

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 miniature galaxy, new research suggests.

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

Researchers claim that there could be at least 1 million interstellar objects hiding in the Oort Cloud at the edge of our ...

Sure, they’re particles and rocks, but they’re still a fascinatingly long way from home. Alpha Centauri is the star system ...

Over a million interstellar objects larger than 100 meters could be in the outer solar system, originating from Alpha ...

"Our Sun (Sol) is marked by a black hexagon, and its orbital path is indicated by a grey solid line (top row only). Alpha ...

The problem is that the Oort cloud is on the outer edge of the Solar System. This would make potential Alpha Centauri objects—if they really are somewhere in there—difficult to observe.

New research suggests millions of unseen interstellar objects, some as big as the Statue of Liberty, could be trapped in the ...

A new study examines how much material from the closest star system to Earth will end up in orbit around the Sun, and how ...