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Star Wars technology: fantastic or feasible?

Force fields could be real, the Death Star’s laser not so much, according to a new American Chemical Society video about the science of Star Wars. The video explores how technology from the iconic sci-fi movies might actually work. For example, plasma, a fourth state of matter formed by heating gas or exposing it to electromagnetic fields, could be the key to both light sabers and force fields. But according to the video, the laser weapon used to blow up the planet of Alderaan would never have worked. Even if the Galactic Empire managed to fire up the Death Star laser without melting the space station itself, its eight beams couldn’t have converged into a single weapon as they did in the film; instead, each one would have flown off in its own direction, missing the planet completely. 

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