1.Jan 18,2008http://www.kent.ac.uk/physical-sciences/RePh/Lunar%20colony_website/surface.html

2.Jan 18,2008http://www.theallineed.com/science/05042512.htm

3.Jan 18,2008http://en.wikipedia.org/wiki/Solar_thermal_energy

4. Jan 20,2008http://www.solarenergy.com/ws400CS.cgi?category=info_making_electricity.html&cart_id=1080124074817998&page=se_complete_systems.html&dci=

5. Jan 22,2008http://sunearth.gsfc.nasa.gov/eclipse/lunar.html