I'm going to make a special request: I know some of you know a lot about astronomy, and others don't.
If you're in the latter group, or even in the former, here's a good site to visit. You'll learn about common misconceptions concerning all aspects of astronomy. It's also a good source of info to refute the tinfoil ("Apollo was a fake!") crowd.
Here's the site: Phil Plait's Bad Astronomy
Neat! Thanks.