Astrophysicist Stephen Hawking says that time travel is possible and may hold the key to humanity´s future. His theory is supported by theoretical work by Albert Einstein and more recently by experimental data from the Large Hadron Collider.
Hawking says that over six years a ship carrying humans could accelerate to 98 percent of the speed of light. At that speed a year would pass on earth for each day on the ship. Humans could return to repopulate earth many years later.
Hawking by his own admission is obsessed with time travel and says we can only travel forward in time. In the past he has steered clear of the topic in public lest he be considered a crank but now he is less worried about that possibility.
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