I took a little bit of astro, notably a class taught by Kinsey Anderson, on interplanetary atmospheres (i.e. solar winds and stuff). Anderson was the head of the Space Sciences Lab at the time. One of the few profs I really enjoyed. Had planned to major in astro, but my time at Berserkeley was rather long and the extra year it would have taken was too much to bear so I got a plain vanilla physics degree. At the time you got a Bachelor of ARTS in physics from Berkeley, not a B.S. I thought that was kind of cool. I suspect that was a subtle psychological motivation to go on and get your PhD. A lot of my classmates ended up at MIT and Chicago. I became a carney, to keep the universe in balance.