Dive into the fascinating theory that octopuses might not be from Earth—are they really aliens?

Scientists may need to broaden their horizons in their search for alien life.

Astronomers have detected a mysterious object in our galaxy that emits intense bursts of radio waves and X-rays with ...

New theoretical models have strengthened the case that immense, energy-harvesting structures orbiting their host stars could ...

NO ALIENS, dead or alive, have ever been taken to Porton Down, a government website proclaimed last year in an attempt to ...

Bacteria that thrive on Earth may not make it in the alien lands of Mars. A potential deterrent is perchlorate, a toxic chlorine-containing chemical discovered in Martian soil during various space ...

Alan Tudyk's perfect easy-to-binge and cancelled too soon sci-fi series is dominating an unexpected streamer.

President Donald Trump has a historic speech ready that could provide the world with UFO disclosure, and he has already picked a date to deliver it.

For readers seeking intellectually ambitious, thought-provoking fiction that bridges science, history and human complexity, ...

A recent global analysis shows that invasive alien species are linked to significant declines in insect populations and ...

The theme this week is proximity - whether an alien / UFO sighting from the Brazilian archives, NASA returning to the moon ...

Dubbed HD 137010 b, the planet might fall just within the outer edges of its star's 'habitable zone', meaning there could be liquid water on its surface and a suitable atmosphere for life.