Ridley Scott’s Alien forever changed both science fiction and horror movies when it came out in 1979, and, nearly half a century later, we’re still chilled to the bone by those terrifying xenomorphs.

The new FX series went to Thailand to film a story that takes place in a hotter, wetter, more ominous world. By Mike Hale Mike Hale, a New York Times television critic, visited the set of “Alien: ...