Time Travel - S1.E2 - Into the Universe with Stephen Hawking
"Is Time Travel Possible?" Hawking explores the world's favorite scientific 'what if?' warping the very fabric of time and space as he goes. From killing your grandfather to riding a black hole, see how time travel may actually come true.
Time Travel - S1.E2 - Into the Universe with Stephen Hawking
April 25, 2010
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