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One of the problems in visiting other solar systems has been that traveling faster than light was impossible... Well, it seems it isn't after all.
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Theoretical physicist, Miguel Alcubierre Moya proposed a method for changing the geometry of space by creating a wave which would cause the fabric of space ahead of a spacecraft to contract, and the space behind it to expand. The ship would then ride this wave inside a region of flat space known as a warp bubble, and would not move within this bubble, but instead be carried along as the region itself moves due to the actions of the drive.
Such a drive could result in "speeds" that could take a spacecraft to Alpha Centauri in a mere two weeks — even though the system is 4.3 light-years away.
More info:
Wiki: Alcubierre Drive
io9: Alcubierre Drive
Extremetech: NASA Working On Faster-Than-Light Travel
