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Weapons in science fiction

Fictional rayguns are often depicted in science fiction.

Strange and exotic weapons are a recurring feature in science fiction. In some cases, weapons first introduced in science fiction have been made a reality; other science-fiction weapons remain purely fictional, and are often beyond the realms of known physical possibility.

At its most prosaic, science fiction features an endless variety of sidearms—mostly variations on real weapons such as guns and swords. Among the best-known of these are the phaser—used in the Star Trek television series, films, and novels—and the lightsaber and blaster—featured in Star Wars movies, comics, novels, and TV shows.

Besides adding action and entertainment value, weaponry in science fiction sometimes touches on deeper concerns and becomes a theme, often motivated by contemporary issues. One example is science fiction that deals with weapons of mass destruction.