Hyperspace collision

Hyperspace collisions, whether they be intentional or by accident, could devastate or even destroy a planet.

History
A hyperspace collision between a Capital ship and a planet could have devastating effects on a populated world. Considering the fact that the output of the reactors of many Capital ships rivaled or eclipsed that of a star, and that the energies needed to make hyperspace travel possible were great, one could unleash a great deal of destructive power on a target. Even if the planet had its planetary shielding up at the time of a hyperspace collision it could still have the potential to kill millions on a planet such as Coruscant,  just due to the fallout. One of the more famous hyperspace accidents occurred during the Clone Wars, when the Star Battlecruiser Quaestor collided with the Separatist planet Pammant, fracturing it to its core.