open questions

this is a list i came up with sophomore year of what i thought to be some interesting issues in physics. a few of them were stated a little poorly, but i think it was basically right on. obviously, i left a few things out, and the questions swing wildly between the grandiose "why are physical constants what they are?" to the incredibly specific "why to pulsars/black holes eject matter from their poles?" a few were clunkly and uninformed-sounding ("are gravitons real?") but were basically in the right area. clearly, it wasn't supposed to be comprehensive, but of course, i can always add to it...