The Extraordinary Life of Stephan Hawking

British theoretical physicist Stephen Hawking during a presentation at the Free University of Berlin.
Photograph: Alamy Stock Photo

Cambridge University professor and fellow Stephen Hawking, circa 1985.
Photograph: Gemma Levine/Getty Images

Giving a speech during the opening ceremony of the 2012 Paralympics in London.
Photograph: Lefteris Pitarakis/AP

Receiving the Presidential Medal of Freedom from Barack Obama at the White House on 12 August 2009.
Photograph: Rex/Shutterstock

Meeting Pope Benedict XVI at the Vatican in 2008.
Photograph: Olycom SPA/Rex/Shutterstock

Taking a trip in a hot air balloon as his 60th birthday treat, on 4 March 2002.
Photograph: Keith Jones/Rex/Shutterstock