Stephen Hawking dead: Rare and unseen photos of the renowned physicist
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Jane Wilde Hawking kisses her ex-husband Stephen Hawking as she arrives at the UK premiere of the film "The Theory of Everything" which is based around Stephen Hawking's life, at a cinema in central London December 9, 2014.
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U.S. President Barack Obama presents the Medal of Freedom to scientist Stephen Hawking during a ceremony in the East Room of the White House in Washington, August 12, 2009.
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Former South African President Nelson Mandela (R) meets Stephen Hawking at Mandela's Foundation office in Johannesburg May 15, 2008.
Stephen Hawking and his new bride Elaine Mason pose for pictures after the blessing of their wedding at St. Barnabas Church in Cambridge, England, September 16, 1995.
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Theoretical physicists Stephen Hawking (L) and John Ellis are pictured after Hawking gave a lecture on the creation of the Universe at the European Organization for Nuclear Research (CERN) in Meyrin near Geneva September 9, 2009.
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Stephen Hawking delivers a lecture at the White House with a live broadcast from U.S. astronaut David Wolf on the Mir spacecraft (R) at the White House in Washington, March 6, 1998. Hawking was lecturing on "Imagination and Change: Science in the Next Millennium" as part of the series of "Millennium Evenings at the White House."