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, ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...

Corrections and clarifications: An earlier version misstated the nature of amoebas, which are single-celled eukaryotic organisms. A single-celled organism known as the “brain-eating amoeba” was found ...

In the 1982 blockbuster, E.T. the Extra–Terrestrial, E.T. is lured out of hiding using a trail of Reese's Pieces. But what would aliens really eat if they visited out planet? According to Professor ...