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

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...

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

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

Pulverised technology from collapsed alien civilisations may lie scattered across the solar system, including on the Moon, a new study suggests. The likelihood of advanced aliens living at the same ...

The nature of space, time and the evolution of life on Earth mean it’s unlikely extraterrestrial life has visited our home ...

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

From the Navy’s infamous Tic-Tac encounter to thousands of recent reports, believers say some of the strangest UFOs may be hiding underwater.

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

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.