Scientists have searched one of the only known visitors to us from another solar system for signs of alien technology – and ...

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 ...

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, ...

Interstellar space is unforgivingly vast, but the emptiness has some advantages. The lack of atmosphere means there is no aerodynamic drag.