At the heart of every lightsaber theres a powerful and mysterious gem. Star Wars superfans will know them as kyber crystals. And they'll know of their much more notorious use -- the Empire used kyber crystals to power the Death Star's powerful superlaser.We learned the history of kyber crystals on the Clone Wars and Rebels TV series. Now, Rogue One and its tie-in novel Catalyst, shed more light on the mysterious gems through the work of Jyns father, scientist Galen Erso. Watch and learn more about kyber crystals and why they're important in Star Wars.

What Are Kyber Crystals and Why Are They Important in Star Wars?

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Star Wars Explained breaks down the timeline of 'Solo: A Star Wars Story'

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Indiana Jones And The Kingdom Of The Crystal Skull

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Go behind the scenes of this iconic film with stories from Lisa Henson and Toby Froud.

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Every Mandalore in Star Wars History

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Star Wars Explained covers everything you need to know before you see 'Solo: A Star Wars Story,' in theaters May 25th

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The complete Legends history of Star Wars, as told by Star Wars Explained.

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What is hyperfuel from 'Solo: A Star Wars Story'? Star Wars Explained explores what coaxium is!

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