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"Eventually, our own Voyager spacecraft will be extraterrestrial artifacts in other stellar systems." ...

A planet with one side permanently roasting and the other frozen in endless darkness might still have a chance of supporting life. Researchers found that heat inside a tidally locked exoplanet could ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology but found nothing beyond human-made interference. Even so, the ...

A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

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

Airport radar systems used daily at major hubs including London Heathrow and New York's JFK could be unintentionally broadcasting humanity's presence to aliens up to 200 lightyears away, according to ...

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

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