Another one from Dragon Ball. Goku’s transformation into a Great Ape is triggered by the light of the full moon, so “Jackie Chun’s” method of changing him back is to use his Kamehameha to blow up the moon. For how much of a task it is to do that, see “Destroying a planet”. This post is going to be about what would happen to Earth if the moon was destroyed.
There are few things that signify overkill like an Earth-shattering kaboom. A lot has been written about how much energy it takes to destroy a planet. But most of those discussions involve things like the Death Star, or how fast an asteroid would have to be moving. What about when your planet-killer is smaller; like a person?