Nasa may have unknowingly found and killed alien life on mars 50 years ago, a scientist claims

Mars once had vast oceans on its surface. Then its magnetic field weakened, its atmosphere thinned, and its water vanished. But the numbers don’t add up. For the Red Planet to have transformed from a

A 3D illustration of China’s Tiangong space station ...

Where did life on Earth begin? That sounds like a relatively straightforward question. Surely life on Earth began… well, on Earth, right? We know this planet had the right conditions for life to arise

What would you say if intelligent aliens came calling?

An old-fashioned hardback book often still beats the internet, doesn’t it? When you can get hold of one. Right now, there’s one, in a package with my name on it, stuck somewhere between a second-hand

Amazing answers to your curious questions