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A question on /r/askscience talks about how big a nuke would have to be to disperse Jupiter. A question here on StackExchange talks about whether or not the Death Star could "Take out Coruscant" due to the planetary shields around it (from the EU/Legends).
Just how strong was the Death Star's superlaser, in terms of of tonnes of watts?
I'm guessing there is no exact number, but if we know that the Death Star destroyed Alderaan (that should be fairly easy to calculate using the formula for gravitational binding energy of a spherical mass) and if we assume it could have destroyed Coruscant, how strong would its laser need to be?
EDIT: I suppose I wasn't clear in my question, I wasn't asking for wookiepedia entries on how powerful the superlaser was, I was asking based on the fact that it could destroy a planet and overwhelm planetary shields, how strong would the laser have to be.