Bibliography
http://www.seasky.org/solar-system/mars-menu.html
http://www.universetoday.com/14911/temperature-of-mars/
http://www.kidsastronomy.com/mars.htm
http://www.universetoday.com/22673/size-of-mars/
http://www.marsquestonline.org/tour/volcanoes/fastfacts/\
http://www.windows2universe.org/mars/interior/Valles_Marineris.html
http://en.wikipedia.org/wiki/Martian_polar_ice_caps
http://www.space.com/47-mars-the-red-planet-fourth-planet-from-the-sun.html
http://www.universetoday.com/14911/temperature-of-mars/
http://www.kidsastronomy.com/mars.htm
http://www.universetoday.com/22673/size-of-mars/
http://www.marsquestonline.org/tour/volcanoes/fastfacts/\
http://www.windows2universe.org/mars/interior/Valles_Marineris.html
http://en.wikipedia.org/wiki/Martian_polar_ice_caps
http://www.space.com/47-mars-the-red-planet-fourth-planet-from-the-sun.html