Ryker said:
could avert some employers thinking I'd only have specialized knowledge. But on the other hand, as I am interested in Astrophysics and Astronomy
Also you can get knowledge in ways other than taking courses. I got hired in my current position because of my knowledge in programming C++, and I've never taken a single course on the language.
Different employers want very, very different things, and what makes you attractive to one employer will make you very, very unattractive to another one. This poses a problem since what may make you hyper-attractive to someone looking for an astronomy professor will make you highly unattractive to someone else. I had problems getting into grad school, precisely *because* I spent time programming C++.
And also the rules change. I'm working at a job that simply did not exist when I was an undergraduate. If in 2015, we suddenly discover that an asteroid will hit the earth, or in 2015, the Premier of China announces that China plans on establishing a moon base, then the rules are going to change very radically.
One important talk that I heard was from someone that was a senior in 1957. In 1957, the United States was in a recession, and people were worried about getting jobs. Then on October 4, 1957, Russia launched Sputnik, and the world changed.
I think honestly that it's too early to be too focused on careers, and you are better off getting a strong liberal arts undergraduate education that will let you do what you want, regardless of what happens. If you just study astronomy, and don't study any history and politics, then you are going to be in a less good position to handle the world changing suddenly.
So basically, I don't want to come off as someone with his knowledge too specialized
You've been brainwashed. That's fine, since we all have. The thing about people in academia is that you advance in academia by doing what your teachers and professors and admissions committees say will make them happy.
However, at some point, that's not going to work, since you are going to end up being pulled in ten different directions by different people that want different things from you. Part of what education needs to be able is not just to be accepted by the committee, but also to figure out what to do if the committee says no.