For more than a century, the idea that life might have arrived on our planet from elsewhere in the cosmos sat at the fringes ...

Consciousness could be a fundamental part of reality, like gravity or matter, according to this controversial theory.

While imperceptible to humans, these tiny delays are significant for experiments that rely on pulsars as ultra-precise cosmic ...

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

Learning doesn’t always mean flipping through heavy textbooks or sitting in a long lecture. Sometimes, it just takes ...

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