[qilmuz6v]

I saw it last night, enjoyed it but am confused about the following...

Spoiler! When you saw the Alien bloke get into his cockpit in order to set the ship to travel to Earth, I thought this would be what they find in Alien. The ships crashes, which would make sense because the ship they find in Alien isn't underground, yet he gets out and dies in the shuttle? I know David said that there were other ships but I presumed these were all underground like this one, then again the ship they find in Alien which has the dead Alien bloke sat in the cockpit, has a lot of room around it unlike in the ship they're on in Prometheus. I think I'm confusing myself a lot here but can anyone enlighten me on the matter...