From Space
Warp drives. Artificial gravity. Terraforming planets. These concepts might sound as though they're ripped from the pages of science fiction, but they're the topic of serious scientific presentations at a symposium this weekend sponsored by DARPA, the Defense Advanced Research Projects Agency.
Called the 100-Year Starship Symposium, the public event will run Sept. 30 to Oct. 2 in Orlando, Fla. For three days, scientists from universities, NASA centers and private institutions will discuss far-out ideas for building a spaceship to visit another star.
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