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Bruce Murray Space Image Library

Viking Orbiter 1 - Valles Marineris

Viking Orbiter 1 - Valles Marineris
Viking Orbiter 1 - Valles Marineris This color image of a cloudy afternoon over the Valles Marineris canyon system was captured by NASA's Viking Orbiter 1 during its 701st orbit of Mars, on Sept. 29, 1979. The image was constructed using pairs of red and violet filter images that were taken by the spacecraft, with the green channel of this image formed by a 40/60 blend of the two images, respectively. NASA / JPL / USGS / Justin Cowart

Original image in PNG format here.