A smile from Mars
12 April 2006
by Richard Conan-Davies
| A crater with some geological forms created a smile for the European Space Agency's Mars Express spacecraft, show the Galle Crater with a smile. The image was taken by the High Resolution Stereo Camera (HRSC) on board the orbiting satellite. The crater is approximately 230 km in diameter.The surface appearance of the crater is shaped by the wind in a process called 'aeolian' erosion. An outcrop in the southern part of the crater is formed from large stacks of layered sediments. Possible evidence for liquid water include several parallel gullies, some of which start at the southern rim the inner crater walls. |
image: ESA |
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