On Friday, interstellar comet 3I/ATLAS makes its nearest approach to Earth. Here's what you need to know, and how to track the alien visitor.

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

On July 1, 2025, astronomers caught sight of a mysterious object racing through the solar system. This object, now named 3I/ATLAS, became only the third known visitor from outside our planetary ...

A visitor from another star is tearing through our solar system, hailing from another star. This interstellar comet, named 3I/ATLAS, is putting on a dramatic show. It is ejecting vivid jets and a rich ...

Remember Steven Spielberg's 1982 film E.T.? The science fiction classic remains both delightfully funny and emotionally resonant in how it explores the connection a lonely young boy forms with a ...