Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

However, new research has shown this potentially "water ice-rich" visitor could be even more extraordinary than initially ...

Astronomers tracking an interstellar object flying through the solar system think it comes from a star at least 8 billion ...

A rare interstellar comet is flying through our solar system. Here's how—and when—you might be able to see Comet ATLAS from ...

The astronomical community is abuzz over a newly discovered "interstellar object," only the third of its kind ever seen, ...

The solar system has an uninvited guest that is currently shooting toward us on a one-way trip through our cosmic ...

Dubbed 3I/ATLAS, it is blazing through our cosmic cul-de-sac at truly awe-inspiring speeds between the main asteroid belt and ...

On July 1, 2025, the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey telescope, located in northern Chile, ...

Astronomers have discovered yet another alien visitor to the Solar System.

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Professor Avi Loeb, a theoretical physicist and cosmologist from Harvard University, told MailOnline why he thinks a new ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.