If you’re going to set a sci-fi movie on an alien planet, it’s a nice bonus if that planet actually exists. Or, at least, is ...

An image snapped by NASA's Mars rover has sparked theories of aliens on the Red Planet. The photo shows what many have claimed is a 'Tic Tac UFO.' Among the rocky landscape is a cylinder-shaped ...

Alien: Earth is a hugely exciting entry in the sci-fi franchise, but its existence may cause some problems for the series' complicated timeline.

A fundamental problem for scientists studying the universe is that it’s big. They can’t point telescopes at every star in the sky, or send planetary rovers traversing millions of square miles ...