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ESA Mars
Oxygen emissions at Mars


The OMEGA instrument on Mars Express has detected oxygen emission at the night side of Mars. The emission, at a wavelength of 1.27 µm, was detected on three occasions during a series of 40 observations made by OMEGA above the planet's limb. The panels above show, from left to right: a 2.2° wide swath of the observed limb at night with emission coded in pink; the vertical distribution of the intensity observed in megaRayleigh (MR) - integration over azimuth. The red line is a smoothed version of the distribution; the integrated observed spectrum, showing emission only at 1.27 µm. Credit: Image courtesy of Bertaux, J.-L., et al. (2012)

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