It is revealed that the beginnings of humanity on Earth may be traced back to a discovery by a team of explorers. In order to ensure the survival of the human race, they must wage a ferocious war.
Prometheus, the newest film in the Alien series (as of this writing), attempts to clarify doubts concerning the Xenomorph's origins. The film also addresses the beginnings of life. And more questions. Really, plenty of questions. Answers? Good point.