Alien Origins - What Happened on LV 426?

Following the events of [b]Prometheus[/b], nothing answers why the Derelict seen in Ridley Scott's [b]Alien[/b] crash landed on the planet [i]LV 426[/i] and why it was carrying a cargo bay full of eggs. [b]Prometheus[/b] took place on an adjacent moon, called [i]LV_223[/i], and on that moon, the crew of the Weyland USCSS Prometheus discovered pyramids containing Engineer bio-weapons, which were stored in Juggernaut space crafts ready to be brought to what we eventually found out to be - Earth 2,000 years ago. [center] [url=http://www.prometheus2-movie.com/gallery/view/img/261][img]http://www.prometheus2-movie.com/media/prometheusK_screencap38.jpg[/img][/url] [/center] [b]Alien[/b] takes place on a different moon - [i]LV 426[/i], however in the same, Zeta 2 Reticulii Star System. In [b]Prometheus[/b], the Engineers are found to have ships full of Ampules, containing a hazardous black liquid which mutates organic life into Xenomorph-like creatures. Yet, nothing like what we witness in the classic [b]Alien[/b] series. So, what really happened to the poor Space Jockey found on [i]LV 426[/i]? Did he crash land there after his chest was burst open by an Alien? Or did the infection occur after crash landing on the planet's surface - potentially disrupting the stasis of his cargo beneath him? But then the question again is - what caused him to crash land in the first place? [center] [img]http://1.bp.blogspot.com/-N847SPjIiD4/T_BcsY39MjI/AAAAAAAAB3k/ylxos6tzb28/s640/2224741-alien19793.jpg[/img] [/center] There are many mysteries between Prometheus and Alien which still have yet to be explored in later sequels. But what's intriguing to me are the significant differences between the Engineer/Space Jockey seen in Prometheus and Alien, aside from obvious physical size differences. Is there a connection between the [i]Ampules[/i] from [i]LV_223[/i] and the Xenomorph Eggs on [i]LV 426[/i]? Were the eggs manufactured like the Ampules? Or did the Engineers manage to engineer a Queen? The question of this topic is - What happened on LV 426? How did the Space Jockey crash and what do you think caused the Xenomoprh outbreak? Share your thoughts and speculations below! Get as detailed with your theories as you like!