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 ...

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

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

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

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, ...