Space Shuttle Project

A four-million-mile journey draws to a flawless ending as the orbiter Discovery (STS-56) lands at Kennedy Space Center's (KSC) Shuttle Landing Facility. Aboard for the second shuttle mission of 1993 were a crew of five and the Atmospheric Laboratory for Applications and Science 2 (ATLAS 2), the second in a series of missions to study the sun's energy output and Earth's middle atmosphere chemical make-up, and how these factors affect levels of ozone.