It is hard to get to Mars and it is even harder to land on Mars, thus Spirit and Opportunity had to overcome numerous challenges in order to land on Mars and to carry out their missions. These two rovers were required to fly through approximately 483 million kilometers of deep space and a very precise landing spot had to be targeted (Jet Propulsion Laboratory 2011). Although their flight paths can be adjusted along the way, however, a minor trajectory mistake can lead to a big detour and/or complete missing of the planet. Besides that, the environment of space is full of hazards that are addressed as “single event upsets”, as when a stray particle of energy goes through a chip in the ...
... middle of paper ...
...cience, vol. 305, no. 5685, pp. 829-832.
• Goodrich, LJ, Mitchell, NL, Walker, R, Shaffrey MM and Dillin, K 2010, Exploring Space: The High Frontier, Jones & Bartlett Learning, LLC, USA
• Jet Propulsion Laboratory 2011, Challenges of Getting to Mars, viewed 11 May 2014, http://marsrover.nasa.gov/spotlight/challengesRover01.html
• Kalvius, M and Kienle, P 2012, The Rudolf Mössbauer Story: His Scientific Work and Its Impact on Science and History, Springer-Verlag Berlin Heidelberg, New York
• NASA 2012, Mars Artwork, viewed 16 May 2014, http://marsrover.nasa.gov/gallery/artwork/hires/descent.jpg
• NASA 2012, The Mars Exploration Rovers: Spirit and Opportunity, viewed 11 May 2014, http://marsrover.nasa.gov/home/resources/MERLithograph.pdf
• NASA 2013, Spirit examines its surroundings, viewed 16 May 2014, http://marsrovers.jpl.nasa.gov/home/posters/SpiritPosterBack.pdf
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