NEXT #Astrophysics Prof @DrRob_Thacker w/ @_MarkSutcliffe for his weekly #science segment bit.ly/1ppeuDa… twitter.com/i/web/status/9…

NEXT#Astrophysics Prof @DrRob_Thacker w/ @_MarkSutcliffe for his weekly #science segmentbit.ly/1ppeuDa… twitter.com/i/web/status/9…