Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to ...

A top scientist has suggested that aliens may be 'terrified of Earth' not because of humanity, but due to a bizarre cosmic phenomenon known as time dilation, which could leave any interstellar visitor ...

Between government document dumps and a Spielberg movie about extraterrestrial life, it’s a good week to believe in aliens. It’s also a good week to reality-check that belief. About a third of the ...

“Disclosure” has become a cult word. It shouldn't be, since all it means, technically, is to reveal something. But the new wave of alien conspiracy theorists have made “disclosure” into a teasingly ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

Add Yahoo as a preferred source to see more of our stories on Google. “Disclosure” has become a cult word. It shouldn’t be, since all it means, technically, is to reveal something. But the new wave of ...

The Trump administration has tapped a Harvard professor with controversial theories about aliens to lead a team of scientists ...