I was going to do a double major at penn state with aerospace engineering and either physics or astronomy and astrophysics. Which one would better help me get a job at NASA? physics or astronomy and astrophysics
What job do you want at NASA? If you want to work for them as an engineer, don't bother with astronomy or physics. If you want to work for them as a scientist, don't bother with engineering, and a physics major is best (or a double major with physics and astronomy). That better prepares you for graduate school, and you'll need a PhD for most science jobs at NASA.