An engineering degree or some other scientific background is one of those unwritten necessities in the intellectual property field. I'm pleased that the site is being used by those it was intended for. I just found your site through American Law Sources On-line. So much great stuff, I don't know where to begin. My school doesn't offer any courses dealing with the subject directly.
Space is an environment rather than a specific discipline.
Consequently, just about every area of law touches in some way on space law. That said, the most common work for attorneys who actually practice space law is in the areas of government and communications. This means the most important courses would be Communications Law, Administrative Law, Public International Law and International Trade. There are a number of schools which offer courses in Space Law. You should be aware that it can be difficult to break into the field.