Explore the world of UFOs from all angles with these books covering the history, sociology and weirder takes on the ...

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.

The posts come a week after the Pentagon released what it described as "never-before-seen" documents on unidentified flying objects.

A new batch of declassified Pentagon UFO materials is fueling fresh public fascination — but files still do not confirm ...

A former CIA-funded researcher claimed that "at least four" different alien species have been discovered in wreckage collected by the U.S. government, though no physical evidence has been submitted to ...