For a couple years now, I've wanted to become a astrophysicist when I grow up or at least something along those lines. I think the whole subject of space and new theories in space is very cool. Everything that's out there is something that will eventually be seen up close by humans. The more we know now, the less we'll guess later. So here's a great Ted Talk about string theory.
https://www.ted.com/talks/brian_greene_on_string_theory
