Maven for company

Print edition : October 17, 2014

The image shows the planet from an altitude of 36,500 km in three ultraviolet wavelength bands. Blue shows the ultraviolet light from the sun scattered from atomic hydrogen gas in an extended cloud that goes to thousands of kilometres above the planet’s surface. Green shows a different wavelength of ultraviolet light that is primarily sunlight reflected off atomic oxygen, showing the smaller oxygen cloud. Red shows ultraviolet sunlight reflected from the planet’s surface; the bright spot in the lower right is light reflected either from polar ice or from clouds. Photo: NASA/University of Colarado, Boulder

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