Just One Derelict

For quite some time now many of us have been trying to determine if the Derelict we see crashing in the Prometheus trailer is or isn't the Derelict from Alien & Aliens. Well, I think I may have the answer... In the Prometheus we see an explosion/impact that causes the Derelict to crash (take not of the damage inflicted to the Hammerhead arm)... [img]http://www.avpgalaxy.net/gallery/albums/movies/prometheus/trailers/normal_20111222_teasertrailer29.jpg[/img] And we all know that when it impacts the ground it rolls before settling in this position... [img]http://www.avpgalaxy.net/gallery/albums/movies/prometheus/trailers/normal_20111222_teasertrailer39.jpg[/img] Now, either in Prometheus or before the events of Alien lets presume (as most of us do anyway) that it topples over, so that in Alien we see it like this... [img]http://application.denofgeek.com/images/m/75spaceships/main/derelict.jpg[/img] And then in Aliens Special Edition we see it like this (best picture I could find sorry)... [img]http://time.absoluteavp.com/pics/derelict2.jpg[/img] Notice which arm has collapsed, the Hammerhead arm. Yes I know that James Cameron stated that this was possibly due to volcanic activity, but my guess is that Ridley has added the damage seen in the Prometheus trailer to the mix. In short explosion/impact on the Hammerhead arm causes the Derelict to crash. It rolls and settles, and at some point topples over ready for Alien. Then at some point before Aliens the damage to the Hammerhead arm is aggravated by volcanic activity causing the Hammerhead arm to break.