Aliens : Prequel
We are 4 billion year old planet with zillions of species living on it. Several times Earth has been obliterated and almost sterilised, but some how Earth has remained habitable over a period of time. As of now Earth is being dominated by Humans and will remain so for long time to come, until we have some nasty global event that can wipe out everything before we could even react. Unlike previous extinction events we have satellites monitoring ourselves and cosmos to warn us of coming catastrophe, being said that we have still have nasty visitors in the form of asteroid or meteorite which just shows up all of a sudden. As of now We have no means of avoiding anything bound towards us, We can just observe and estimate when it can slam us and what might be level of extinction. Even if we build spacecrafts and evacuate some of us out of Earth, We have no place to go other than crash land somewhere after we run out of fuel. As space faring species We are doing baby s...