Stephen Hawking - Black Hole Time Travel - yttune.com
Published: 7 years ago By: WeAreStarStuff51
By: WeAreStarStuff51Published: 7 years ago
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Stephen Hawking explains how we could use the extreme gravity of a black hole to travel to the future.
Into The Universe With Stephen Hawking - Time Travel
This video belongs to Discovery Communications and is being used for educational purposes only.