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NASA Funds 12 Far-Out Space Tech Ideas by Mike Wall, SPACE.com Senior Writer | July 19, 2013 Future starships may be constructed in Earth orbit using a ring-type construction facility, which could have hotel rooms where guests could observe the construction. Credit: Adrian Mann

Want to Colonize an Alien Planet? Send People - If humanity ever wants to colonize a planet beyond the solar system, it's going to need a really big spaceship.