The one idea the Alien franchise kept flirting with and never pulled the trigger on was a sequel set on planet Earth. It was a proposed early concept for Alien 3 before David Fincher came on as director. It was teased at the conclusion of Alien Resurrection -- but there was never a fifth film in the franchise. The alien remained out in deep space, a very distant and remote threat.
Alien is now a full-fledged multimedia franchise. Disney acquired the property in its acquisition of 20th Century Fox and has revved up production of this show at the same time it's also releasing new theatrical films (Alien: Romulus premiered in theaters earlier this summer). The xenomorph has also been added to the universe of Marvel Comics; a series called Aliens vs. Avengers recently debuted on comic shop shelves.
Here is the Alien TV series' official synopsis: