The darkest thing in the universeNobody knows what it is, but we can see what it does. Join us for a talk about dark matter.Here’s an article about how we mapped where dark matter is in our universe.Mysterious dark matter mapped in finest detail yetHere’s an article about a galaxy that is almost entirely made of dark matter.A Galaxy has Been Found that's Almost Entirely Dark MatterAnd here’s an article about a galaxy that apparently has no dark matter.Mystery of Galaxy's Missing Dark Matter Deepens