This close-up view of the Martian north polar ice cap shows layers of water ice and dust for the first time in perspective view. Here we see cliffs which are almost 2 kilometres high, and the dark material in the caldera-like structures and dune fields could be volcanic ash. Credits: ESA/DLR/FU Berlin (G. Neukum)
The above story is based on materials provided by European Space Agency. Note: Materials may be edited for content and length.
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European Space Agency. "Mars Express Mission Extended." ScienceDaily. ScienceDaily, 27 September 2005. <www.sciencedaily.com/releases/2005/09/050926083834.htm>.
European Space Agency. (2005, September 27). Mars Express Mission Extended. ScienceDaily. Retrieved April 20, 2014 from www.sciencedaily.com/releases/2005/09/050926083834.htm
European Space Agency. "Mars Express Mission Extended." ScienceDaily. www.sciencedaily.com/releases/2005/09/050926083834.htm (accessed April 20, 2014).