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KENNEDY SPACE CENTER, FLA. -- EOS Aura: The Aura mission will study air quality, climate and stratospheric ozone depletion. Aura is the third of NASA’s major Earth Observing System (EOS) orbital platforms and has four instruments. The Microwave Limb Sounder (MLS) and the High Resolution Dynamics Limb Sounder (HIRDLS) will make complementary measurements of stratospheric ozone and the chemicals that destroy it. HIRDELS and MLS will also measure upper tropospheric water vapor and ozone - key gases that regulate climate. The Aura payload also includes the Tropospheric Emission Spectrometer (TES), which will make the first global measurements of lower atmospheric ozone, and the Ozone Monitoring Instrument (OMI), which will measure the total amount of atmospheric ozone as well as lower atmospheric dust, smoke and other aerosols. Aura is scheduled to launch in 2004. The flags on the decals represent the countries participating in the mission: United States, United Kingdom, Netherlands and Finland. The EOS Aura mission is being managed by NASA’s Goddard Space Flight Center.