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.

Wondering whether we're alone in the cosmos is almost a rite of passage for human existence. It's a mystery that scientists – and stargazers – have pondered for many years. The Fermi Paradox poses a ...

When Alien: Earth makes its long-awaited debut tonight on Hulu and FX, it will introduce fans of the Alien franchise to a vast cast of new characters. As you’ll learn as soon as Alien: Earth starts, ...