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

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

Avi Loeb vows to brief public and create website to share findings of team tasked with investigating origins of mysterious ...

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

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

Three companies will receive a total of $600 million to executive four moon landings, laying the groundwork for a planned ...