A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

Scientists may have just taken one of the biggest steps yet in the search for life beyond Earth. Meet K2 18 b, a distant ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

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

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of ...

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

Beneath the icy silence of Antarctica's famous Dry Valleys lies a world so unusual that it often resembles another planet.

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...

Steven Spielberg's claims that aliens have already visited Earth have drawn a mixed but pointed scientists' reaction this week, with astrophysicists in the UK and Australia stressing that while ...

In “Disclosure Day,” in theaters now, Steven Spielberg is once again inviting audiences to ponder the existence of extraterrestrial life — and the implications it would have for religion ...