BLACK HOLES CAN LIE! (or not)
Monday, March 7, 2011
http://www.youtube.com/watch?v=wHsLlGTpBUc&feature=fvsr
this is cool but you have to read the little captions to under stand it
http://www.youtube.com/watch?v=gDuPH_7n4l0&feature=related
this is a very good too
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