Planet Hunting Techniques
A detailed review of the science behind current planet hunting techniques was written by Dynamic Patterns Research in 2005. These techniques are currently being used today to discover hundreds of planetary systems in other parts of the Milky Way galaxy, and more will be discovered in the near future.
Extrasolar Planet-Hunting Techniques (PDF) by Matthew T. Dearing, Dynamic Patterns Research © 2005.
As a citizen scientist, you may directly participate in the critical research of the search for extrasolar planets by joining Planet Hunters from Zooinverse.
DPR AmSci Journal also published the following related articles about planet hunting and citizen science:
Citizen Scientists Discover Two Exoplanets (September 28, 2011)
Protecting the Planet Requires Heroes, Money, and Citizen Scientists (April 12, 2011)
Dynamic Patterns Research Identifies Candidate Exoplanet (January 31, 2011)
Planet Hunting a Giant Leap for Citizen Science (December 28, 2010)