A viral video claiming to show a fleet of unidentified flying objects streaking across Japan's night sky has sparked feverish online debate. While some users insist it's 'proof of alien activity,' ...

Add Yahoo as a preferred source to see more of our stories on Google. Donald Trump's pledge to release official files relating to UFOs has intrigued conspiracy theorists who suspect the US government ...

The White House has lifted the lid on the shock extent of an "alien invasion" which has blighted US soil for the past six decades. On a newly-created website, the Trump administration has put out ...