Elon Musk has turned a long-running joke about being an extraterrestrial into a central part of his public persona, even as he argues that humanity may be the only intelligent life in the universe.

Add Yahoo as a preferred source to see more of our stories on Google. Aptly titled “In Space, No One…” (playing off the original film’s famous marketing ...

You are driving alone through a quiet countryside road at dusk when something strange appears in the sky. A sudden white ...