Mebber,
Xenomorph,
13 years ago
The prometheus is launching some kind of pod while flying towards the jockey ship, could be the pilot escaping the Prometheus after setting an collision course, so your theory really sounds plausible. Well, we can only speculate about the motives to ram the jockey ship. Stopping it from flying to earth sounds good, but maybe for other reasons than the jockey trying to punish the humans?
Maybe it's one of the crwmembers of the prometheus trying to fly the ship to earth, maybe for the company, and the rest of the crew is trying to stop him for some reasons (maybe whatever they found on the derelict is way too dangerous to deliever it to earth and a ruthless company).
One thing i'm still wondering about; if this planet is really LV-426, why is it looking so different from the acherontic landscapes we've seen in Alien and partly in Aliens? Just good weather and a different season?
Ash said the planet is cold, extremly cold, "way below" the freezing point, but still we can clearly see a fluid waterfall in the first trailer... i can understand weather and temperature changed after terraforming, but before?