Surf these sites: Edwin Hubble -- Lawyer-turned-astronomer who photographed the galaxies Hermann Weyl -- One of the first people to combine general relativity with the laws of electromagnetism Karl Schwarzschild -- The man who solved Einstein''s equations and predicted the existence of black holes Marcel Grossmann -- A brief biography on Marcel Grossmann, a classmate of Einstein who was the first to find a connection between tensor calculus and the theory of relativity. Willem DeSitter -- Mathematician who studied solution to general relativity and developed DeSitter space
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