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 ...

NASA confirms the arrival of 3I/ATLAS, the third interstellar object. The ATLAS project spotted it in June 2025. Its speed ...

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, ...

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.

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

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