A man has claimed the Egyptians did not build the Great Pyramid of Giza, and instead thinks a secret 'supercivilisation' did ...

Popular culture imagines aliens as creatures made of flesh and bone — but some researchers argue that advanced civilizations ...

President Donald Trump says he’s directing the Pentagon and other government agencies to identify and release files related to extraterrestrials and UFOs because of “tremendous interest.” Trump made ...

Among the most persistent claims is that extraterrestrials assisted in the construction of ancient civilizations.