For our web site we used many sources

http://hometown.aol/bobalien99//marslife.htm

http://solarsystem.jpl.nasa.gov/missions/profile.cfm?sort=alpha&target=mars&ali 

http://solarsyatems.jpl.gov/planets/profile.cfm?object=mars

http://photojournal.jpl.jpl.nasa.gov/cataiog/pia09105

http://seds.org/spaceveiws/pathfinder/science.html

http://www.nasa.gov/missions_pages/mro/multimedia/pia09105.html