During that close approach, scientists were surprised to note that 3I/ATLAS brightened much faster than they anticipated.

As a joke, she labeled it LGM 1 for "Little Green Men," but the astronomers working on it did not really believe they had ...

A team of astronomers monitoring interstellar object 3I/ATLAS have found something a little surprising. Our third confirmed ...

Comet 3I/ATLAS is only the third confirmed interstellar object ever spotted, travelling over 130,000 mph and carrying chemical signatures older than our Sun ...

I/ATLAS has proven a theory created by Einstein over a century ago, but the way it did it may also prove it's really an interstellar spacecraft.

The comet, called 3I/ATLAS, is the third known interstellar object that has come through our solar system. As it flies deeper ...

Keck II telescope observations of interstellar object 3I/ATLAS found "evidence for a puzzling anti-tail extension" pointing ...

"If the object is an alien spacecraft slowing down, and the anti-tail is braking thrust, then this change from anti-tail to ...

Interstellar comet 3I/ATLAS accelerates mysteriously, raising questions about its origin and what it means for humanity.

Should we prepare for alien invasion? The interstellar object 3I/ATLAS is travelling through our solar system on a hyperbolic path. Scientists observe its odd behaviour, debate its origin and monitor ...

Harvard astronomer Avi Loeb has argued at length that 3I/ATLAS — the third-ever interstellar object ever detected, currently ...