Learn About Exoplanets

Extrasolar Planet Encyclopedia
http://www.exoplanet.eu/

California & Carnegie Planet Search
http://exoplanets..org

The Anglo-Australian Planet Search
http://www.aao.gov.au/local/www/cgt/planet/aat.html

The Geneva Extrasolar Planet Search Programmes
http://obswww.unige.ch/~udry/planet/planet.html

Planet Quest (JPL)
http://planetquest.jpl.nasa.gov/index.cfm