Stephen Hawking

Theoretical physicist Stephen Hawking poses for a picture ahead of a gala screening of the documentary "Hawking," a film about the scientist's life, at the opening night of the Cambridge Film Festival in Cambridge, eastern England on Sept. 19, 2013. (credit: ANDREW COWIE/AFP/Getty Images)

Hawking: ‘I Truly Hope Humans Will Be Living On Mars’ By The End Of The Century

British cosmologist Stephen Hawking believes humans will colonize the moon in 50 years and hopes people will be living on Mars by the end of the century.

CBS Tampa–03/17/2014

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