>>213358888>>213358923>>213358950>>213368189The reasoning is simple - the original script for Prometheus was a direct prequel to alien, called "Alien: Engineers" or something, written by David Spaiths.
It was set on LV-426, and it would feature the derelict's crash as the climax. Which is retarded, because the ship in the OG has clearly been there for centuries, if not millennia - but whatever.
When Scott decided to take the franchise in another direction, instead of making a "one and done" prequel, him and his pal Lindelof were too lazy to write a story from scratch that would fit their new grand ideas - so they just tweaked the Spaiths script, changed a few things around (LV-426 became LV-233) and called it a day.
Which is why on both planets there's a Donut space jockey ship crashing, with the pilot dying from a chestburster afterwards. And they're not the same thing. Yes, Ridley is that retarded.