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What is the least energy intensive option for timely interstellar travel?
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April 16th, 2015
For example, you want to travel to Proxima Centauri in less than a few years.
Which takes less energy, creating an artificial wormhole between Earth and PC, or using an Alcubierre-White warp drive travelling at, let us say, 10c?
What other options exist that are allowed by current physics?
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