A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

Hawaii’s Gemini North telescope has captured new images of interstellar comet 3I/ATLAS with a green glow as it remerges from ...

It came from the dark, quiet parts of interstellar space, maybe from a place where the sun doesn't have much of an effect. It ...

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

It's difficult to believe that, given the enormous extent of outer space around us, there aren't other life forms out there. Humanity has long been intrigued by the idea, with movies, books, and TV ...

The tongue-in-cheek campaign reasons that viewers should drink whatever they feel like, since an alien invasion may be on the ...

A mysterious object that a controversial scientist claims could be an alien battleship reaches its closest point to Earth on ...