Collaboration is now underway to perform space-based experiments on the interactions of rocket plume exhausts and the ambient environment at an altitude of roughly 350 km. The key element in this experiment is the use of the Mir space station as a platform for optical instrumentation. A description is given of the modeling and instrumentation involved in the execution of this experiment, as well as a description of the experiment strategy and some experimental data already obtained. In particular, a hypothesized model of the OH(A-X) ultraviolet radiation is presented and evaluated. * The research reported herein was performed by the Arnold Engineering Development Center (AEDC), Air Force Materiel Command. Work and analysis for this research were performed by personnel of Sverdrup Technology, Inc., AEDC Group, technical services contractor for AEDC. Further reproduction is authorized to satisfy needs of the U. S. Government.