The Forgotten Planet

It has been 2,000 years since the human race left Earth when it became inhabitable. Since then they all have branched off into multiple colonies, living on planets or on large spaceships. All colonies are run by The Cell, the space station that contains all data and information of the colonies. It is also the government of the galaxy. When a research team of archaeologists go back to Earth to find out what happened and see if we can inhabit it after The Disaster. Little do they know, Earth has been thrust into darkness, just like how the dinosaurs went extinct.
So when problems arise in the colonies, the human race might end up like the dinosaurs.