The development of the universe. The clandestine dark matter society -- The discovery of dark matter -- The big questions -- Almost the very beginning: a very good place to start -- A galaxy is born -- An active solar system. Meteoroids, meteors, and meteorites -- The short, glorious lives of comets -- The edge of the solar system -- Living dangerously -- Shock and awe -- Extinctions -- The end of the dinosaurs -- Life in the habitable zone -- What goes around comes around -- Flinging comets form the oort cloud -- Deciphering dark matter's identity. The matter of the invisible world -- How to see in the dark -- Socially connected dark matter -- The speed of dark -- Searching for the dark disk -- Dark matter and comet strikes -- Conclusion: looking up.