Below are some Links to other sites which you may find useful.
NASA - Videos, podcasts, a vast photo archive, 3-D image files and pages of missions where you can view raw data as it streams in. This site is a must for anybody with a fleeting interest in space. http://www.nasa.gov
How Stuff Works - Expertly written articles explaining everything under the sun. Hundreds of videos add to the experience. http://www.howstuffworks.com