PHOTOS: Stephen Hawking with World Famous Personalities
American business magnate and founder of Microsoft, Bill Gates with Stephen Hawking.
Barack Obama speaks with scientist Stephen Hawking during an award ceremony.
Britain's Queen Elizabeth met Stephen Hawking at Leonard Cheshire Disability charity in 2014.
Pope Francis meets English theoretical physicist and cosmologist Stephen Hawking.
Stephen Hawking with former South African president Nelson Mandela during his visit to South Africa.
Barack Obama honouring scientist Stephen Hawking the nation's highest civilian honour in 2009.
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