1.	NASA Home Page.  NASA may have the most complete site on the web.  A wonderful place to start looking for pictures, text, and movies related to space. 

2.	NOAA.gov:  National Oceanic and Atmospheric Administration.  One of the best and least explored sites that comes to us courtesy of the National Oceanic and Atmospheric Administration.  Visually rich; full of data relating to space, oceans, satellites, weather, nature, and the environment in general.  Also serves as a portal to other marvelous sites.  

3.	Space.com:  Space news, games, entertainment and science fiction.  One of the best commercial sites; lots of information put forth in an intriguing way because of the variety of astronauts that have been involved with this site.