I just finished my first year of undergrad. Though I know I have plenty of time to figure it out, I am trying to figure out what sub-field I want to go into. In short, I am a non-traditional student, 35 years old, and have studied physics as a hobby since I was a kid. Here are a few of the main factors contributing towards what I will eventually decide on: - I have always loved quantum physics, though I know that isn't a choice as far as sub-fields go. - The type of things that have interested me most over the years have always been the mysterious; the boundaries of what we do and don't understand. - I am 90% certain that I want to pursue theoretical over experimental, just because I like the idea of pushing the envelope. - I do like astrophysics, but I don't think I want to be limited to that field. Not sure if it's the same in all colleges, but my college splits into "physics" or "astrophysics" at the BA level. - I had been considering particle physics, but many individuals I have talked to have discouraged me due to budget cuts in the field. I'm also not 100% certain that sub-field would take me in the direction I truly want to go. Enter next point... - As far as my ideal aspirations, I would love to be involved in a field exploring the theories behind interstellar travel. All I have seen so far is theories/concepts that require exotic matter. Since we don't know if exotic matter even exists, I would love to explore what we *do* have to work with. Even if we couldn't get there in my lifetime, I would love to at least be a contributor towards guiding us in the right direction. As far as my last point above, I know that once I pursue work, I will most likely not have the flexibility to pursue what I want such as that. However, I would be very interested in a field that explores concepts like that. Based on my interests above, could anyone give me any suggestions as to what sub-fields I may want to consider?