A rare visitor from deep space has swept through the inner solar system, offering astronomers a fleeting look at material ...

With sapphire waterfalls, lava rain and orbits around dead stars, these distant worlds push the limits of what’s possible.

"Star Trek" is home to countless alien species, many of whom offer beloved characters. Some are not. We rank the 10 most ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

But 3I/ATLAS is no ordinary rock – it’s a comet from beyond the solar system which greeted the Earth on December 19. It’s ...

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 ...

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

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

Fourth anniversaries aren’t often causes for celebration. But in the case of the James Webb Space Telescope (JWST), which ...

Scientists have sought out and detected radio emissions from from interstellar comet 3I/ATLAS, confirming what most ...

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

The interstellar comet 3I/ATLAS safely passed Earth this morning as it continues its brief trip through our solar system.