Stephen Hawking flying through the universe in a new video of Monty Python's Galaxy Song. Monty Python/YouTube hide caption

Astrophysicist Stephen Hawking in 2006. ELIZABETH DALZIEL/AP hide caption

British cosmologist Stephen Hawking gives a talk to workers at Cedars-Sinai Medical Center in Los Angeles, in April 2013. Eric Reed/AP hide caption

A view of the Large Hadron Collider in its tunnel at CERN in Switzerland. Martial Trezzini/AP hide caption

Physicist Stephen Hawking has revealed "England's World Cup Success Formula," which he says was derived by using general logistic regression analysis. YouTube hide caption

This artist's impression shows the surroundings of the supermassive black hole at the heart of the active galaxy NGC 3783 in the southern constellation of Centaurus. M. Kornmesser/ESO hide caption

British scientist Stephen Hawking appears during the opening ceremony of the London 2012 Paralympic Games in London last year. Leon Neal/AFP/Getty Images hide caption

Chuck Palahniuk rides the Paris subway on Sept. 29, 2006. Christophe Ena/AP hide caption

British cosmologist Stephen Hawking gives a talk to workers at Cedars-Sinai Medical Center in Los Angeles on April 9. Eric Reed/Cedars-Sinai/AP hide caption

Deep space; deep questions. NASA/Getty Images North America hide caption