Which major?

I'm thinking of majoring in either physics, mathematics, or aerospace engineering. Triple majoring would be suicide, but double majoring might work, like between physics and math. However I'm still a bit interested in applying both math and physics so I'm considering just a single major, aerospace. Anyone in any of these majors have any input?

Just a funny one I'd like to share with you:
-1 = -1
\frac{-1}{1} = \frac{1}{-1}
\sqrt{\frac{-1}{1}} = \sqrt{\frac{1}{-1}}
\frac{\sqrt{-1}}{\sqrt{1}} = \frac{\sqrt{1}}{\sqrt{-1}}
\sqrt{-1}^2 = \sqrt{1}^2
-1 = 1