Green Crystal?

It was Kryptonite

Hi Just my speculation, but it reminded me of the first penetration of the back of the xeno's head through the engineers ribs at the end. It was that shape breaking through..perhaps it symbolised re-birth or something.... Just my thought M

That's a teaser for the next installment, just like the backstory to the first engineer in the opening scene. Did he selflessly volunteer to seed the earth with his DNA, or was that his sentence for some crime, to commit hara kiri on some far flung world. The location of the crystal suggests to me combination of a control device coupled with some form of death -cult worship, on what looks like a combined altar/work station with the image of a xenomorph in crucifix position on the wall behind it.

god knows there is a pic of it in my thread! looks clear and green, very confuseing

please let A LOT OF THE INCONSISTENCIES AND TEASER CONTENT not explained in Prometheus be foreshadowing for the 'better' part of this trilogy, and not just 'marketing scattershot' like the Happy Birthday David, and TED talk. :)

I wrote something related to this in another post talking about the running away engineers' hologram. The film show us that all the engineers ran to the closest capsules' room and I believe that the crystal has something to do with that. I have a theorie that the crystal is some kind of emergency measure in case of an outbreak. If activated, a species of face-huggers could break lose and infect any compatible life-form eventually generating xenomorphs that could easily wipeout any standing threat. As the life cycle of a xenomorph is short, they also would die in matter of days leaving the environment in quarantine 'clean'. This would explain the piled bodies of engineers with burst holes and why they all ran to the crystals' chambers. Any thoughts?

I have a slightly different take on it Didacus. I think that the purpose of the green crystal might well be to keep the things dormant. (Like the safety devices on nukes that prevent it from arming inside a submarine until someone gives the order to arm it). Perhaps that's why they were rushing to get in there, some of them were infected and were hoping to put their parasites to sleep before treating themselves somehow. It could well be that in opening the door, and altering the controlled climate, David deactivated the crystal (by accident through not understanding, or simply because he was programmed to find out by risking other peoples lives, what would happen) This then awoke the dormant worms and the black goo. There was something in some backstory somewhere about the Aliens being mesmerised by green light as well, if I recall correctly. I don't see the Xenomorph as an instrument for purging the ship, because while it may have a short lifespan, it's perfectly capable of hibernating for very long periods. We have no idea how long the derelict was on LV-426 before The Nostromo arrived, and those eggs just sat there waiting for something to come close enough to wake them up. Then they waited decades more while Ripley slept, and the planet was terraformed, and the unlucky Jordan family came upon the derelict, and Newt's dad met same fate as Kane did in Alien.

That's quite interesting. I see where are you coming from. What's the story with the green lights?

I think they were in a draft script. There may also be a link to the green goo David finds on the door control. He looks at it, sniffs it and then says "Impressive". Is it connected to the green "crystal" in the altar? Does it sedate or control things made from black goo. Find out in the sequel...

I took the green "crystal" to be akin to a piece of amber. Scott edited that scene so that it includes a change in perspective just before Charlie's flashlight is about to illuminate the mid-section of the Green Crystal. Why would Scott do that? IMHO, it's so we do not see a shape that is embedded within the crystal. He did something similar with the fresco on the ceiling and the bodies in the pile of the dead Engineers.