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

I/Atlas was first spotted on July 1 by the Asteroid Terrestrial-impact Last Alert System (Atlas) survey telescope in Río ...

A renowned physicist believes he's cracked the mystery of where a giant unidentified object hurtling through our solar system ...

A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

New research has revealed everything astronomers currently know about the mysterious interstellar object 3I/ATLAS.

Scientists have been studying an interstellar object that's currently moving through our solar system which was first spotted on 1 July. It has been called 3I/ATLAS because of what spotted it, and ...

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 object is said to be billions of years older than our planet - a relic from the Milky Way's distant past ...

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

The interstellar comet 3I/Atlas is the fastest and largest of its kind, giving astronomers a rare glimpse into extrasolar ...

We have discovered two interstellar objects so far, ’Oumuamua and Comet 2I/Borisov. ’Oumuamua had no dust tail and a ...

What at first seemed a routine detection of an object travelling through the solar system soon turned out to be anything but. The object’s trajectory revealed it to be a much rarer visitor than first ...