True color image of Mars taken by the OSIRIS instrument on the ESA Rosetta spacecraft during its flyby of the planet on 24 February 2007 at 19:28 CET from a distance of about 240 000 km; image resolution is about 5 km/pixel.. The image was generated using the OSIRIS orange (red), green, and blue filters.
 

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ESA - European Space Agency & Max-Planck Institute for Solar System Research for OSIRIS Team