Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

The Outer Limits still feels remarkably modern, with eerie sci-fi stories that inspired generations of genre television.

With new technologies come new opportunities. And that is especially true in astronomy—with every new advanced telescope, we ...

It catches very low frequency radio waves made by lightning, solar storms and charged particles moving through Earth’s ...

Research indicates airport radar systems may unintentionally broadcast Earth's presence to aliens up to 200 lightyears away, ...

A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

Discover this week's must-see night sky events, moon phases, and stunning astrophotos. Sign up for our skywatching newsletter ...

The short answer is that there’s nothing to disclose. But that doesn’t mean we won’t make contact with extraterrestrial life ...

The Great Filter theory suggests advanced civilisations may self-destruct before contacting others, explaining the universe's ...