Martian soil. Micrograph of a patch of soil on Mars,showing coarse grains on a fine layer of sand. The spherical particles,such as at bottom left,may have been formed by the cooling of molten rock,or by the accretion of successive layers around a smaller particle. Other particles are more jagged in appearance,suggesting they have a different origin. This 3cm-wide image was taken by the microscopic imager instrument on the Mars Exploration Rover Opportunity on 3 February 2004,its 10th day on Mars. For a colour-stretched version of the same image,see R360/122 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / US Geological Survey / NASA / JPL |
Bildgröße: | 1016 px × 1021 px |
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Restrictions: | - |