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

Scientists suggest that advanced aliens might not have physical bodies, challenging traditional views of extraterrestrial ...

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

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

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

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

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

With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself resurfaces: if aliens were to arrive on Earth, would they come to conquer us, ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new paper.

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist having a Eureka moment, realising in a single dramatic instant that Earth is ...

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...