Ridley Scott reveals how his Prometheus sequels fit into Alien

Head's up, fans of complicated sci-fi chronology: director Ridley Scott has confirmed that there will now be three sequels to 2012's Prometheus, which was itself a prequel to 1979's original Alien, before the storylines meet up somewhere in the middle.
Scott made the announcement at a press conference in Sydney, where he is about to begin production on Alien: Covenant, the first of the three (or second of the four, depending on how you count). It was previously known as