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Lightsabers, the iconic weapons of the Jedi and Sith, are not possible in the real world as they violate several laws of physics. However, physicists have speculated that a theoretical particle called the "tachyon" could potentially create a beam of light that behaves similarly to a lightsaber.
The sound of the TIE Fighter engines in Star Wars was created by combining the sound of an elephant call with the sound of a car driving on wet pavement. This unique sound effect has since become iconic and is instantly recognizable to fans.