If you opened X this week, you may have seen President Donald Trump apparently chatting with two very tall, very pale, platinum-blonde figures in red uniforms, and you may have seen thousands of ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

Rather than being an alien craft, 3I/ATLAS likely formed 12 billion years ago at a key moment in the early Universe ...

THE last-ditch search for the missing Malaysia Airlines jet will be extended for another year, more than a decade after it vanished without a trace. Flight MH370 with 239 people on board ...

"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 ...

Loeb's team will report to a new White House panel focused on UFOs, now often referred to as unidentified anomalous phenomena ...

Hollywood makes initiating alien contact seem much easier than it has proven to be. In E.T. the Extraterrestrial, E.T. got ...

Scientists have identified new clues that could help astronomers spot one of the most famous hypothetical alien ...

With new technologies come new opportunities. And that is especially true in astronomy—with every new advanced telescope, we ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to lead a team of outside scientists to study the national security risks ...

The Supreme Court on Tuesday made it far more difficult for foreigners to bring lawsuits in U.S. courts alleging serious violations of international law. In an opinion by Justice Amy Coney Barrett, ...

Are aliens real? Was Fox Mulder right all along? We examine the prediction markets to gauge if the U.S. government will confirm that aliens exist before January 2029. The prediction market on a U.S.