Below is a list of references and additional resources.
- "The Birth of Stars and the Discovery of Planets Outside Our Solar System," Voyages to the Stars and Galaxies, 3rd edition, (2004) .
- "Life Beyond Earth," The Solar System, The Cosmic Perspective, 3rd edition, (2004) .
- "Planetary Harmony," Sky and Telescope, (January 2005) .
- Searching for Extrasolar Planets, (2002). .
- http://www.exoplanets.org .
- http://www.extrasolar.net .
- http://www.hao.ucar.edu/public/research/stare/stare.html .