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Date: 08/29/2006 Speaker: Prof. João Steiner Institution: Institute of Advanced Studies/USP Summary: The origin and evolution of the concept of black holes will be discussed. It will be shown how stars die, transforming into white dwarfs, neutron stars and black holes. The evidence for the existence of supernova black holes in the center of galaxies, including our own, will also be discussed, as well as the consequences for their evolution.