In this artist’s impression, a comet erupts with jets of gas as it falls toward the sun from the depths of the outer solar system. There’s a giant ball of ice barreling through the solar system right ...

There’s a giant ball of ice barreling through the solar system right now, and it’s bigger than any we’ve seen before. It poses no threat to Earth, but this comet, called C/2014 UN271 ...

It's possibly as big as Manhattan, likely older than our own solar system and it's traveling through space at speeds of up to ...

Right now, while you watch this video, something invisible is passing through the Solar System. It moves silently, without shining, without leaving a clear trace. Our telescopes miss most of it, our ...

(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 at a ...

CAPE CANAVERAL, Fla. (AP) — NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this ...