Your odds of winning the lottery are still 100,000 times larger than the probability of either Voyager hitting a comet.

David Jewitt at the University of California, Los Angeles, and his colleagues studied images from ground-based and ...

The Oort Cloud is a vast, icy shell that surrounds the solar system, marking the farthest reaches of our cosmic neighborhood. Though we have yet to directly observe its objects, the Oort Cloud is ...

This video investigates the unusual early activity of Comet Bernardinelli-Bernstein, a massive body traveling from the Oort ...

Launched in 1977, Voyager 1 has surpassed its initial objectives and now journeys through interstellar space. It crossed into ...

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 at a distance ...

Right now we can’t observe extrasolar Oort clouds, if they exist. (Not for lack of trying; we’ve been looking for them since 1991!) In fact, we can’t even directly observe our own Oort Cloud.

The Oort cloud could stretch as far as a lightyear away from our sun. Like the name suggests, the Oort cloud is kind of cloudy, and surrounds our solar system like a wide but tenuous shell.

It's a complete game changer." According to NASA, the Oort Cloud is thought to have formed when gravity from the newly formed planets pushed icy objects away from the sun.

The existence of the Oort Cloud was first proposed in 1950 by Dutch astronomer Jan Oort, who imagined it as a shell of icy bodies swirling around the sun from up to 1.5 light-years away.