Astronomers have spotted 3I/ATLAS, just the third interstellar object ever seen in our solar system. Bigger, faster, and possibly far older than ‘Oumuamua or Borisov, this icy traveler could help ...

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse of icy bodies revolving around the sun.

Astronomers believe they've discovered a spiral structure inside the Oort cloud that surrounds our solar system.

The comet, first spotted on July 1 by the NASA-funded Asteroid Terrestrial-impact Last Alert System in Chile, is only the third known interstellar object to pass through our solar system. It was first ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse.