When will we realistically be able to colonize space? Not really Astronomy, but, Astronomy factors into it. What technology needs to be developed? Is it theoretically possible to travel near light speed or faster than light speed(wormhole teleportation included, even though it's not really traveling super fast)?
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Edited by Alpha: 4/5/2016 10:46:03 PMhttps://en.m.wikipedia.org/wiki/Alcubierre_drive This is absolutely important for FTL travel. And we would need a breakthrough in science to terraform planets.