As an aspiring astrophysicist, I know a thing or two about space. I also know that space is super cool and almost everyone I've ever talked to wants to learn more about it. This is a technique of studying I do with friends and family, as by teaching something that I know, if better cements that concept into my brain. Fair warning: I don't know everything, and I will let you know if what you're asking is out of my grasp. But I'm pretty good, so fire away.