Quasars. Wormholes. Cosmic string fragments. Vulcan mind melds. Bioneural gel packs. Dyson spheres. If you have ever watched a Star Trek television episode or movie, you've heard many words and phrases like these. Over its long history, the Star Trek universe has taken us undreamed-of worlds, employing scientific concepts that often sounded like complete fantasy. After all, a six-foot-tall humanoid couldn't possibly change into a four-pound bird. Or could he...?