| It depends on what you really want to do. I have two BS degrees - one in Physics and one in Astronomy, both from the Univ of Maryland.
Most people I know, in order to *do* Astronomy, wind up having to get a PhD and spend all their time at a university doing what I consider to be pretty boring stuff.
Don't get me wrong - I LOVE astronomy and space and all (and I do have a career in aerospace), but before considering pursuing a degree in this subject, you should ask yourself what do you really see yourself doing day-to-day.
Hope this helps!
-Adeena | 
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