**I don't know where the spoiler tag is, so skip passed if you don't want to read.***
I'm leaning towards the "cut it off!" Scene as the shot we see with that tentacle looking squid thing coming out one of the crew members arm. My guess is it's the same poor guy we saw with the melting visor, who is infected with something that is absolutely changing him. We know one of them looks morphed and the guy standing in front of the waterfall is changing before our eyes, and it's probably the same guy we see attack another crew member who they shoot at although his body form is changing, you can still see he's wearing the same blue space suit.
I also think that 'we were so wrong' is in referrence to it's not an invitation, but rather a warning. Or if it is indeed a invitation.. It's one not of happiness and exploration, but more as bait to see who responds to wipe out your civilization. From what public knowledge they've given us and from the new trailer, Weyland had terriformed several colonies throughout space and they mentioned 6 places or so all with the same markings, .. to me it sounds like they (bad guys) were looking for something or obvioulsy intentionally left something as in saying.. you really wanna know? Come find out, and PS. Screw you. ( I could be so wrong myself)
No they're are some sort of creatures already on the planet..we know that from the other ship in the trailer..
Also read somewhere on another forum that some have suggested that the space jockey aliens could actually be Weylands first andriod series that they sent out to build those other worlds who they left abandoned and stranded, and they evolved and basically turned on their masters..
ie (and I'll probably screw up this quote..sorry) God creates man. God creates man in his image. Man creates man in his image. Man creates God. Man pisses God off and God hits the reset button.
I could see that in some ways.. How is it that Weyland knew about the first distress signal anyway, why was Ash's mission so important.. because they already knew. I think David CAN read what's on the wall and may have left the orignal message that the Nostromo finds.. He's company built after all and Theron's character seems to corner him in the hallway.. he's not all forth coming with info. We'll see. We all have speculations at this point and the trailer was fantastic! Excited for sure!
Whetver they find we hear Shaw's character basically say if we don't stop it there won't be anything to go home to and it looks like they intentionally crash prometheus into the ship.. Don't think that works exactly cause we see it still see it fly/then crash. I've always thought the alien craft in Alien was more of 'bomber' type of ship. This will be interesting to say the least! We all have speculations at this point and the trailer was FANTASTIC! Excited for sure!