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 Trump administration to ...

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

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 ...

Aliens could, in theory, reach Earth but would never truly go home again, according to physicists who say Einstein's laws of relativity turn any near‑light‑speed visitor into a 'time exile.' The ...

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 ...

When UK mockumentary Alternative 3 tried to spook viewers that scientists were vanishing as part of a sinister space plot it succeeded. Today, the resulting conspiracy theory has even seen Trump’s ...

Scientists say extraterrestrial life may exist elsewhere in the universe, but vast distances, enormous energy requirements and Earth's unique environment make alien visits to Earth highly unlikely.

A larger theory asserts that aliens have shaped Earth, leaving guidelines and ways of living in the scriptures in Sanskrit. In fact, there is a belief that Sanskrit might not be a language, but a ...

How were the pyramids built? Who created the crop circles? Well, History Channel’s successful show, Ancient Aliens, offers their theories about the topics. The show has been running since 2009 and has ...