'Alien: Earth' is the first-ever Alien TV show and it's finally arrived. Here's how to watch 'Alien: Earth' wherever you are on the planet. When you purchase through links on our site, we may earn an ...

That now classic tagline (from Alien, one of the greatest science-fiction horror movies ever made) hinges on a big assumption that most of us broadly make: space is empty. And it is—mostly. But there ...