FILE - In this Wednesday, July 21, 1999 file photo Professor Stephen Hawking smiles during a news conference at the University of Potsdam, near Berlin, . Hawking, whose brilliant mind ranged across time and space though his body was paralyzed by disease, has died, a family spokesman said early Wednesday, March 14, 2018.(AP Photo/Markus Schreiber, File) Crédito: Markus Schreiber/AP