The physics and chemistry of the Earth's upper atmosphere and ionosphere are Stan Solomon's specialty. He works on theoretical modeling and data analysis to investigate the impacts of solar output on Earth's atmosphere. Solomon is a principal investigator for TIMED (Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics). Instruments on this NASA satellite are gathering data to help understand how the Sun controls weather at the edge of space. In addition to his research, Solomon has served as a lecturer at the University of Colorado, teaching topics that range from solar-terrestrial physics to satellite system design. Solomon is a researcher in NCAR's High Altitude Observatory.