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 ...

Astronomers have detected the first-ever "radio signal" coming from the interstellar comet 3I/ATLAS, right as it passed the halfway mark on its oneway trip through the solar system. And while this may ...

July 29 (UPI) -- A California woman's doorbell camera captured a video of a mysterious figure that has some residents speculating about alien activity. Jessica Ortiz shared footage to social media ...

Presidential and public curiosity about the possible existence of aliens and UFOs has been part of the national conversation for over half a century. The big picture: The debate was reignited last ...