http://ocw.mit.edu/OcwWeb/Physics/index.htm

MIT offers online astronomy and physics courses at no cost. They will also be at no course credits of course, but if you're objective is to learn the real skinny on astronomy on a budget, this is the ticket.

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http://members.elirion.net/~maddad
There are 10 kinds of people. Those who understand binary, and those who do not.