For generations, humans have imagined what it would be like to discover life beyond Earth. Would alien beings look anything ...

Astronomers studying the interstellar comet 3I/ATLAS say it could be a 12‑billion‑year‑old relic formed in near‑absolute‑zero conditions, while Nasa dismisses claims it is an alien probe.

A nearby 'super‑Earth' just 25 light years from our solar system has been recategorised as a lighter, likely rocky world sitting in the habitable zone of its star, raising fresh hopes in the search ...