Jobs that have to do with extraterrestrials or space?

I'm currently 15, turning 16 soon and i'm looking threw fields I want to study. I want to do something with space or life in space or on other planets whether it be extraterrestrials or plant life maybe even just microorganisms! I just want to do something that involves other planets or the universe! For some its a bit out there but I believe that there is NO WAY that Earth is the ONLY planet to support life in this vast universe...completely impossible. And please don't go shoving religious stuff down my throat, I don't want to hear it, I believe in science and that's all. So please if there are any jobs out there, please list them?