What's the difference between Theoretical Physics and Astrophysics? What I mean is isn't Astrophysics also included in Theoretical Physics?
Well, it depends on if they are doing theoretical astrophysics or observational astrophysics. It is fairly difficult to do astrophysical experiments since the magnitude of astrophysical quantities and objects tend to be quite extreme.Alright. Let's say that a person is doing MS in Astrophysics. Will this mean that he's a theoretical physicist as well?