Bennet, Jeffrey and Megan Donahue, et al. 1999. The Cosmic Perspective. Menlo Park: Addison-Wesley Longman,Inc.

Dick, Steven. 1998. Life on Other Worlds. New York: Cambridge University Press.

NASA Newsroom.  (1995). "Welcome to the Planets." [online]. Available: http://pds.jpl.nasa.gov/planets/. (2 June 2001).

Rebecca and Melissa. "First Life."  [online]. Available: http://www.geocities.com/eurekaproj/evolution/fstlife.html. (2 June 2001).

Unknown.  "Earth." [online]. Available: http://pds.jpl.nasa.gov/planets/welcome/earth.htm. (2 June 2001).

VanLeer, John. Professor, Cascadia Community College. 30 May 2001. Personal Interview. Woodinville, WA.

Ward, Peter D. and Brownlee, Donald. 2000. Rare Earth. New York: Copernicus.

Revised: July 05, 2001 .

Back

Home