President Donald Trump has promised to declassify top-secret alien files and UFO documents. Here is what the Pentagon has ...

More than 2,500 alien plant species could find suitable conditions in the Arctic, especially in northern Norway and Svalbard.

For more than six decades, astronomers have listened for possible signals from extraterrestrial civilisations, with no confirmed detection to date. A .

One of Britain’s most prominent space scientists believes humanity may finally get an answer to one of its oldest questions within the next few decades. Maggie Aderin-Pocock says she is “absolutely ...

If you found out we weren't alone, if someone showed you, proved it to you, would that frighten you? That question sits at the heart of Disclosure Day, Spielberg’s new film. Here are 10 movies that ...