Observation of Airglow On Other Solar System Planets
The Venus Express spacecraft contains an infrared sensor which has detected near-IR emissions from the upper atmosphere of Venus. The emissions come from nitric oxide (NO) and from molecular oxygen. Scientists had previously determined in laboratory testing that during NO production, ultraviolet emissions and near-IR emissions were produced. The UV radiation has been detected in the atmosphere, but until this mission, the atmosphere-produced near-IR emissions were only theoretical.
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