I was looking though some math courses to add to my schedule this coming year and came across "logic and foundations". It seems interesting enough to take, but I'm not sure how "applicable" it would be in terms of future math/physics work. The description on the course is:

Do you guys think this would be a good course to take, or is it sort of outside of what could be more useful?

Sorry, gleem, ultimately I'm looking into astrophysics. As per the exact area of study, I'm unsure, as I still have a couple years to go. I do have an interest in cosmology though.

One thing you might learn from that course is how mathematicians think and talk and reason. Thus it could be useful in understanding and doing better in future math courses and in reading math books.

That's why I was curious about taking it. I still have several math courses left to take, as well, my advisor recommended it. However, he recommended it as an option for opening up a math minor, not for the fact that it helps my major.

If you are interested in Cosmology you might consider Topology or Differential Geometry if they wre not on your recommended list. The little non technical book "How the Universe Got Its Spots" by Janna Levin might be of interest to you.