Can explosions work in space?

So, you almost had it at about 2:30, almost. It isn't just the shock wave that is the most powerful part of an explosion though. It is what defines the explosion itself and differentiates it from a mere burn or rapid expansion. It's all about that compressed, supersonic flow. In which case, energy is irrelevant, like the black holes vs nuke thing. It is energy density. Anyway, to try to balance out some of the negativity I just threw down, I liked the gravitational wave part insomuch as you acknowledge the dependence upon a medium.