Elon Musk has turned a long-running joke about being an extraterrestrial into a central part of his public persona, even as ...

"The idea that we're alone in this vast expanse of the universe, truly -- not that we're being watched, but that we're alone out here -- is a pretty narcissistic thing to think," Stone shared during ...

Editor's note: What started as an internet joke has generated a stern military warning after more than a million people "signed up" to "raid" Area 51—a secretive military installation in Southern ...