From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

Pocock, a space scientist at University College London and BBC presenter, predicts alien life will be found by 2075 but ...

It's one of life's biggest questions - are we alone in the universe? Now, one of Britain's top space scientists has declared ...

Is 3I/ATLAS an alien probe? Breakthrough Listen uses the Green Bank Telescope to search for technosignatures as the ...

A mysterious metal shard, once thought to be a piece of a UFO that crashed in 1947, has sparked years of wild speculation.

Scientists have sought out and detected radio emissions from from interstellar comet 3I/ATLAS, all but confirming that it has natural origins.

Is 3I/ATLAS a comet or an alien ship? Harvard's Avi Loeb warns of a 'serial killer' visitor as the interstellar object makes ...

In 1994, the fragments of the Shoemaker-Levy 9 comet smashed into Jupiter with a force equal to 300 million atomic bombs.

Long before scientists discovered that other stars in the universe host their own planetary systems, humanity had ...

Polling shows that nearly half of Americans now believe aliens have visited this planet—and that the number who aren't sure ...

It came from outer space. Interstellar space, to be precise. From somewhere beyond the influence of our sun, possibly from ...