I was reading up on the Derelict and Space Jockey in Alien. Why are we assuming that the Jockey was fossilized? I mean he may have looked like a skeleton, but we're assuming that the Engineer technology is biomechanical, it's biological technology, and we've seen in Prometheus that the Jockey was actually a suit with something else underneath. So shouldn't we think that Space Jockey's suit just looked like that, I mean, it looked about the same in Prometheus. Also people say that the Space Jockey was twice the size of any Engineer. I always thought the Jockey was the same height as the Engineers in Prometheus, that the suit made him look big, like he was shorter on the inside. Not to mention, how can a suit fossilize?
I mean, I still say the Derelict crashed or landed whatever you think years ago, but not because it looked fossilized, but because of the mural in Prometheus and because Scott said that the two ships in Alien and Prometheus were about the same age, "2000 years give or take" the same thing that Shaw estimated in Prometheus how long one of the dead Engineers was dead.