Milky Way CSI: Were Galaxy 'Homicides' an Inside Job?

The Milky Way's galactic neighborhood doesn't look the way it should, and now scientists think they know why. In the space surrounding Earth's home galaxy, the Milky Way, there should be lots of small galaxies — at least according to computer models and scientific predictions. New research strongly suggests it?s the latter — and the culprit in these galactic homicides are exploding stars called supernovas. The finding comes from computer simulations done by researchers at t