I'm living proof that any idiot can find good data on the space thermal environment. Van Rijn's link was a jewel, I don't know if IDW ever got it downloaded. SMAD and a number of websites all show that a lot of the same materials/values get repeated...a lot. If folks really want to learn, it doesn't take a lot of searching to find valuable, and consistant, information. And it's understandable by laymen. Having experts here to help with some of the tough stuff also goes far, to those willing to admit they don't know everything.