UARS which reentered atmosphere Saturday

The Upper Atmosphere Research Satellite (UARS) fell back to earth this weekend. UARS is best remembered for studies of the ozone layer and Antarctic ozone hole, particularly the role of chlorine, halocarbons, and nitrous oxides in ozone depletion. The satellite also observed the transport of volcanic aerosols and the cooling of the atmosphere in the wake of the eruption of Mount Pinatubo.