It has to be LV-426....and that ship is the derelict...

You might want to calm down a bit it is just a movie.

Biomechano: You know what, I may just do that. I temporaraly forgot that people enjoy this sort of banter. I myself did it years ago in the old Aliens newsgroup. (shit, it's gotta be nearly twenty years ago!!!!!!!!!!!) My apologies. Speculate away. (I think the company learns what to listen for!)

The SJ ship in Prometheus is NOT the derelict from Alien. The navagator "turntable" platform in Alien is completely different from what we have seen in Prometheus, i.e. no stasis pods or control panels. This moon does not have the same geology as LV-426 either

Well the moon in Alien was 1200km across (computer readout) and had near-earth gravity (0.86) which is also impossible. So it can't be becauce of the geology? LOL So why did Ash have SPECIFIC orders in Alien to "bring back life form" "crew expendable" if HUMANS had NOT come across this planet BEFORE. How do we explain that?

I gotta agree that the planet is LV426 and the ship is the derelict. I admit am wrong in my original theory of the SJ being Weyland. but I think there has to be a connection with the film title and the plot. The trailers indicate that they were wrong about it being an invitation. The impression I get is after finding the urns, releasing their contents sets out a chain of events that result in the SJ piloting the alien ship back to earth to destroy mankind. I wonder how the SJ ends up with the hole in it's chest from what must be a alien burst out of it.

After watching the directors cut of Alien last night, I'm almost convinced that LV-223 is in fact LV-426 Here's why. When the Nostromo is seen cruising into the system, there is one large planet with rings and some moons (one of which is LV-426). Then we see when the Prometheus is approaching LV-223 that there is a large ringed planet that it and other moons are orbiting. Also when the crew is trying to find out where they are after waking up from hypersleep, Lambert states "we're just short of Zeta 2 Reticuli" ....... isn't that where LV-223 is supposed to be? Now I know that this has been argued on the forum before but here's my hypothesis as to what happens. At the end of Prometheus, one of the SJ/Engineers/infected crew sets forth in motion the terraforming sequence on LV-223 changing it into a volcanic waste land to try and destroy all evidence of the engineers/sj/Prometheus. Meanwhile Weyland Industries covers up all info regarding the mission/planet etc even going as far as renaming LV-223 to LV-426. 30 years or so later, knowing what is really on LV-426 (223) they get the Nostromo to investigate the "signal", knowing full well what they would find. And to add, perhaps we've been mislead to think that the scene with the blue guy at the waterfall and the Engineer ship hovering above is the beginning sequence. Maybe it's the end scene where the Engineers are terraforming LV-223 to try and erase all evidence of themselves and the Prometheus.....thus turning it into what we know as LV-426 As for the signal, perhaps the SJ in the crashed ship had activated it to communicate to the engineers to come and clean up the mess but the terraforming didn't do its job completely, leaving the derelict ship intact and its signal going. Also perhaps the terraforming also changed the cargo's dna turning it into the egg sacs we see in Alien when Kane goes into the hold as well as the SJ in the pilot seat making him larger than the ones seen in Prometheus. That's my 2 cents anyways but I guess we'll all know for sure in a few weeks.

@LV426JGFPM - to be fair, Aliens takes place something like 90 years after Prometheus, so I have no doubt they were able to improve upon spaceflight technology. Also @zzord... if by some bizarre chance LV426 was superdense, it is theoretically possible that it might have a gravitational field similar to Earth's, but it would have to be some [i]insanely[/i] dense material like osmium, or something even denser. I know that I recently read about the discovery of a whole planet denser than lead, so it's not completely impossible. Remember, a superdense object like a black hole has gravity so strong that not even light can escape it.

I won't ruin anything, but I saw a critics screening of Prometheus on Thursday and I believe that there are two different planets with different ships. What took me to this page was thinking that LV-223 was not the planet referenced in the Alien films. And it's impossible to do this I'm sure for any fan of Ridley Scott's and the material, but go in as cold as possible and expecting nothing. I loved the film, but I overhyped it to myself over the time since it was announced. Nothing could live up to the hopes I built up. But it is pretty damn great no matter what.

It's nice to see that we all agree that the origin of the Xenomorphs is less important than the connection between LV-223 and LV-426. They were genetically engineered monsters, much like humans and the dinosaurs from Jurassic Park. Back to the topic at hand though, maybe LV-426 is just one of many random planetoids that the Engineers raced to in attempt to get their biological weapon away from their homeworld. Except in the case of the derelict spacecraft, it could not cope with the harsh conditions on LV-426, causing the canisters to prematurely rupture, and the creation of the hundreds of eggs, without any necessity of a queen. And it just so happened that the Space Jockey onboard got infected. This theory does not support the absence of the supposed chestburster/xenomorph in Alien. Nice try though, right?