Over the years there have been many missions to mars, some were very successful, while others were not. All of these missions have been for the purpose of photographing the planet, and bringing back as much new information as possible on every aspect of Mars. Over the years these missions have evolved from simply flying by the planet and taking pictures to actually landing on the surface and deploying mobile units which can better analyze …showed first 75 words of 1412 total…

…showed last 75 words of 1412 total…gov/>. Comins, and William Kaufmann III. Discovering the Universe. 6th Ed. New York: W.H. Freeman and Company., 2003. Bond, Peter. "Lift-off for Mars". Astronomy and Geophysics. Aug2003, Vol. 44 Issue 4, p4.04, 1p. 17 Nov 2003. Academic Search Premier. Kunzig, Robert. "Mars Express". Discover. May2003, Vol. 24 Issue 5, p34, 10p, 2 Diagrams, 3c. 16 Nov 2003. Academic Search Premier. Benghin, V. "Radiation environment monitoring for manned missions to Mars". Advances in Space Research. Jan2003, Vol. 31 Issue 1, p35, 4p. 16 Nov 2003. Academic Search Premier.