Should I major in math, physics, or astrophysics?

If you are planning to become a professor with a B.S., I suspect you've set yourself a rough row to hoe.

Are there not teachers at your school who could advise you on the best approach?

They should be your first port of call.

Presumably the plan is to go on to get a PhD after the undergraduate degree.

I would suggest an astrophysics major if it is offered by your preferred school, and a physics major if not.

And definitely get a minor in mathematics.



I don't think it makes a bit of difference. And your preferred school probably only offers one or the other, so I would say the answer is whatever one is offered by your preferred school.

They both offer a broad background of general subjects and a specific focus on majors and minors. The difference is the BS has a slightly stronger focus on majors, and the BA has a slightly stronger focus on the background of general subjects. But the difference is so slight that on a practical level it doesn't matter.