A Physics/Astronomy Minor is an excellent way to learn more about Astronomy, whatever your major, and also will enhance your job prospects at places like JPL and NASA, where engineers work on interdisciplinary teams side-by-side with astronomers to design and launch satellites such as the Hubble Space Telescope, and the Kepler Planetary Search Mission.
While an Astronomy Minor does not currently exist, one is being planned and will be submitted for university approval soon. In the meantime, students can take the equivalent courses as a Physics minor. Those courses are (30 units total; 18 units beyond freshman physics):
PHY 234 - EM waves, optics, special relativity (Winter only)
PHY 235 - Modern physics (Spring only)
Quantum mechanics, atomic physics
+ a 3-quarter Astronomy sequence
PHY 424 - Intro. to Astrophysics (Fall only)
A survey of modern Astrophysics, including stars: their formation, structure, evolution, and death,; galaxies; and the origin, structure, and evolution of the universe
PHY 425 - Space Physics (Winter only)
A study of gravity and planetary motions, including interplanetary travel, planetary properties
PHY 426 - Relativity, Gravity, and Black Holes (Spring only)
The really cool stuff!
For more information on signing up for a Physics/Astronomy minor, contact Professor Alex Rudolph at alrudolph(at)csupomona.edu.
You can also get additional information on the Physics major at the Physics Department webpage, here.