From Borg battles to impossible moral choices, these are the 'Star Trek' episodes that define the hit sci-fi franchise.

From the Upside Down through the Devil's Anus and beyond. Here are 6 times these theoretical wormholes turned up in sci-fi ...

Erich von Däniken, who has died aged 90, was among the first writers to suggest that human civilisation, and even human ...

In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars. The Perseverance rover, which has been exploring a dried-up lakebed for years, found ...

Rare, 9‑foot-tall red‑necked ostriches, sometimes nicknamed “camel birds” for their towering height and desert stride, have ...

Humans have always been fascinated with space. We frequently question whether we are alone in the universe. If not, what does ...