Space Jockey Ship Shape

Hmmm, I don’t really know about how it would enter atmospheres, but Ive always thought of the thing flying with its arms to the front. Judging from the trailer, it seems that the jockeys ship sits on its back end, with the arms stretched skyward, when it lands on a planets surface. In the trailer.... after the explosion on the derelict, while its in the air... it seems that the ship attempts to make a crash landing, and as it comes down on its back end, the combined force of the explosion and the landing, cause the ship to tip and roll over in the direction of its left arm. This is depicted in the last three or four closing shots of the trailer. That is what Rapace and Theron are running away from, at the end. The ship is toppling over on top of them, and they are trying to outrun the arm crashing down upon them from above. The ship IS bio mechanical in nature. In Prometheus the ship is still alive, which is why the barreled bulkheads are covered with technology, as opposed to the dead bony structure we see in Alien. Its interesting to note that the ships color is a bluish hue in Prometheus, while it looks a dull brownish color in Alien, probably due to dust, and the fact the ship has been lying there decaying for so long

I know, I always envisioned it flying with arms to front. But that would make no sense when you take onto entering different planet zones. I'm sure Earths is not the most violent. So the shape would be ass backwards for entering and leaving. It is way cool concept bit would it work?

I think the derelict ship has a force field which protects it from atmospheric friction. I agree with Rizzle, the derelict is biomechanical. In Prometheus the ship is "alive". In Alien, the ship is "dead" and "derelict". Maybe the derelict ship has the ability to flex its "arms" depending on various atmospheric/astronomic condition? Who knows, maybe when the derelict first crashed on LV-486, the "arms" were closer together like a horseshoe and as the ship "died" the arms slowly spread apart? Compare the spacejockey chair room in Prometheus with the room in Alien. In Alien the floor is sunken. Probably from a combination of time and the Alien that burst out of the Space Jockey. In Prometheus the floor seems to be covered in plates.