Government/Non-Profit Resources

GSFC Materials Outgassing Database
Huge database of all the material that Goddard has tested for vacuum outgassing properties.  Note to the user: how materials are prepared (bakeout, cure times, vacuum levels, etc.) are critically important to how many materials behave in testing and in space.
web: http://epims.gsfc.nasa.gov/og/ 

CREME96 Radiation Modeller
Need to find out the expected radiation dose for your earth orbiting satellite?  Follow this link to the industry standard tool.
web: http://crsp3.nrl.navy.mil/creme96/ 

NASA SBIR Program
Looking for funding sources for your next space idea?  Here's one place to start:
web: http://sbir.nasa.gov/ 

US Air Force Research Laboratory
The US Air Force conducts a wide variety of space research.  Much of it is coordinated by this agency.
web: http://www.afrl.af.mil/ 

Cometography
All you ever wanted to know about comets and current comet events and visibility.
web: http://cometography.com/index.html