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The search for life beyond Earth has always been full of surprises. Strange radio signals have sparked excitement. Odd gases on distant worlds have raised questions. Even ordinary objects have been ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

For the first time in more than 15 years, the International Academy of Astronautics (IAA) Search for Extraterrestrial ...

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

What happens if scientists find evidence of extraterrestrial intelligence? That question was at the center of a recent SETI Live discussion about newly updated post-detection protocols and how ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

As much as Steven Spielberg likes aliens, he seems to prefer holding them at arm’s length. The creatures in Close Encounters ...

Military and commercial pilots are increasingly treated as star witnesses in UFO debates, but psychologists warn their dramatic testimonies cannot, on their own, prove alien visitors.

Near the end of Star Trek: First Contact, after Captain Jean-Luc Picard (Patrick Stewart) and the crew of the Enterprise stop the Borg from altering history, the movie arrives at the scene its title ...

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, ...