I'm interested in astronomy as well so I've been looking into that. I'm also interested in astro-geology so I would have to get a degree in geo. Those are kind of my standard routes, and then there is a crazy idea I got one night and that is, the philosophy of science. All the critical thinking of science with none of the ego shredding calculus. It sounds interesting because it would be the history and philosophy, which is always fun. I really get my giggles from that kind of thing. The bad news is I would have to learn a foreign language to reading comprehension and as anyone that took Latin with me in High School or knew me in Japan knows, I don't do languages so hot. Still, reading is my strong point and I think I could do it.
I don't know I gotta take the GREs here in the next few days if I am even going to have a chance to apply for the Fall term. I am looking to get my teaching certificate as well as I read a shocking statistic, only about 1/3 of high school physics teachers were trained in physics or mathematics, the remaining 2/3 are teaching out of field -- which explains my high school physics teacher. This is upsetting to me. Expect a delightful rant on education soon.