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The 'new big bang' theory by Stephen Hawking

Prof Stephen Hawking completed his final theory shortly before his death last week, explaining how to detect parallel universes. "A Smooth Exit from Eternal Inflation" is a mathematical paper that sets out to find proof of the multiverse theory, which argues that there are many other universes existing alongside our own. Hawking's co-author on the paper was the Belgian physicist, Thomas Hertog. What does it say?

Picture: Stephen Hawking during a press conference in New York April 2016. Credit: EPA/JASON SZENES

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4 minutes