1/11Stephen Hawking took a zero-gravity flight in 2007.
2/11Stephen Hawking with actor Eddie Redmayne, who portrayed him in the movie <i>The Theory of Everything</i>.
3/11Stephen Hawking and his daughter Lucy Hawking arrive on the red carpet for the 2015 British Academy Film Awards.
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4/11Stephen Hawking meets former South African president Nelson Mandela in Johannesburg in 2008.
5/11Stephen Hawking poses with his new wife Elaine Mason after they were married in Cambridge on September 15, 1995.
6/11Pope Francis greets Stephen Hawking at a plenary session of the Pontifical Academy of Sciences at the Vatican in 2016.
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7/11US President Barack Obama presents the Medal of Freedom to Stephen Hawking in the East Room of the White House in 2009.
8/11Queen Elizabeth meets Stephen Hawking during a reception for Leonard Cheshire Disability charity at St James's Palace in London on May 29, 2014.
9/11Stephen Hawking attends the launch of The Leverhulme Centre for the Future of Intelligence at the University of Cambridge on October 19, 2016.
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10/11Stephen Hawking at the launch of his book <i>A Brief History of Time</i> in Los Angeles.
11/11Stephen Hawking smiles during a symposium in honour of his 60th birthday at the University of Cambridge in 2002.
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