There are a great many fabulous sites you can visit on astronomy, space and the Hubble Telescope if you want to learn more. Here are some of our favorites!
The Planetary Society
This 100,000 plus member organization supports space exploration. It was founded by Carl Sagan, Louis Freidmann and Bruce Murray in 1980. http://www.planetary.org/
Planetary Photojournal - Jet Propulsion Laboratory
A repository of celestial images from crafts managed by JPL, including the Voyagers, Cassini-Huygens, Mars Rovers, etc. Pick your planet to view images! http://photojournal.jpl.nasa.gov/
Goddard Institute for Space Studies
This division of Goddard Space Flight Center at Columbia provides access to publications and information. http://www.giss.nasa.gov/