In Rogue One, destruction caused by single laser fire of Death Star looked similar to nuclear weapon destruction. But, seeing it was given such a big focus (even Empire was showing it off to create fear), I wondered whether there're nuclear weapons in Star Wars universe.

Also, I see TIE fighters and X-wings always have low yield bombardments. Our real world fighter jets (having nuclear warheads) could do better to destroy Thermal Oscillator on Starkiller.

Does Star Wars universe have nuclear weapons or other mass destruction weapons having similar yield (of course, excluding Death Star and Starkiller)?

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