UARS is the first spacecraft launched as part of NASA's systematic, comprehensive study of the Earth system. It was launched on 12 September 1991 and deployed in a near polar orbit on 15 September 1991 from the Space Shuttle Discovery. UARS, the first satellite dedicated to studying stratospheric science, focuses on the processes that lead to ozone depletion, complementing and amplifying the measurements of total ozone made by the Total Ozone Mapping Spectrometer (TOMS) onboard NASA's Nimbus-7 and the Russian Meteor-3 satellites. UARS also measures winds and temperatures in the stratosphere as well as the energy input from the Sun. In its first two weeks of operation, UARS data confirmed the polar ozone-depletion theories by providing three-dimensional maps of ozone and chlorine monoxide near the South Pole during development of the 1991 ozone hole. UARS, developed and managed by GSFC, in Greenbelt, Md., provides information that nations around the world can use to guide decisions on environmental policies, according to scientists. UARS was designed to last 18 months, but parts of it are still operational. The United Kingdom and Canada both provided instruments for this mission. This website provides a detailed description of UARS project including information about its instruments; movies and images; project's current status; data plots; orbital information; and UARS brochure and link to publications and reference material.