With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself resurfaces: if aliens were to arrive on Earth, would they come to conquer us, ...

The nature of space, time and the evolution of life on Earth mean it’s unlikely extraterrestrial life has visited our home ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer them a somewhat risky buffet. There is liquid water, as well as salts, ...