A Pegasus rocket starts it's first stage burn to propel the SORCE Satellite payload is a joint project with Orbital NASA and the University of Colorado.

A Pegasus rocket starts it's first stage burn to propel the SORCE Satellite payload into low-Earth orbit, January 25, 2003, off the coast of Cape Canaveral, FL, The SORCE satellite, Solar Radiation and Climate Experiment,is a joint project with Orbital, NASA and the University of Colorado. The satellite is an atmospheric instrument that will measure incoming radiant energy from the sun. Scientists will use this to address long term atmospheric and climate changes. Other uses will be for ozone research and ultraviolet radiation. (Photo by Eric Roback and Rob Rivers, NASA Langley Research Center)