What bachelor's degree to take if I want to have a phd in astrophysics?

I was told to take physics as an undergraduate, but if the astrophysics thing doesn't work out, the only choice I have is to be a teacher, which I REALLY don't want to be. Can I take any other major? My friend told me that in Princeton (which I would love to be in :D ) they have a class in engineering physics and I can work in factories and stuff.