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A Walk In Time Hawking and other visionary physicists consider the possibility of using wormholes as portals to the past and future. | Stephen Hawking's Universe | 02:22 | April 23, 2010 | 81920 |
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Wormhole Voyages If we could ever open a massive wormhole, could it be used as a portal for journeys to distant planets or the deep past? | Stephen Hawking's Universe | 01:34 | April 23, 2010 | 73568 |
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Mad Scientist Paradox Hawking uses a variation of the "grandfather paradox" to show why time travel can give cosmologists nightmares. | Stephen Hawking's Universe | 01:51 | April 23, 2010 | 56703 |
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Black Hole Time The immense gravity of black holes makes them natural time machines and someday spacecraft may be able use them to journey into the future. | Stephen Hawking's Universe | 02:32 | April 23, 2010 | 76758 |
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Time Travel Starship In the future, a massive spaceship built for extreme velocities could acclerate to near light speed and travel into the future. | Stephen Hawking's Universe | 02:40 | April 23, 2010 | 78734 |
Video Added: April 23, 2010
Views: 81920
Runtime: 02:22
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