I'm training to be an engineer <a href=" http://www.wigt.co.uk/generic-effexor-problems-xr.pptx ">effexor generic antidepressant</a> Somewhere, at the center of a spiral galaxy 500 million light years from Earth, a black hole is doing what black holes do best: consuming everything surrounding it. As unwitting planets and stars are sucked into the black hole's maw, matter collects in an accretion disk and begins to orbit the center of the black hole. As more matter is pulled into oblivion, the accretion disk spins faster and faster, like an ice skater executing a tight camel spin.