Dark matter is the biggest mystery of the cosmos. Scientists know that it has been vital to the universe since its birth, new discoveries reveal that it could create black holes, cause mass extinctions, and might even have helped to shape life on the Earth. Might there be a dark matter universe that may account for all the events that aren't really definable? This is all pure speculation and if's.
Stars: Richard Lintern, Mike Rowe, Phil Plait