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 ...

The White House turned a legal term into a science-fiction spectacle. The real story is not the theatrics. It is how language ...

Are some planets actually born from alien wanderers drifting through space? :milky_way: A new theory suggests that interstellar objects like comet 3I/ATLAS might be seeding young star systems, ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

Public fascination with alien visitors has surged again after a cryptic response from the Central Intelligence Agency about the interstellar object 3I/ATLAS. While NASA scientists have publicly ...

Why are aliens always such a cliche? This one is a mockup of the Roswell Alien from the Museum of Science’s new exhibit, “The Science of Aliens,” which opens Sunday. Click through for more images, ...