iss005e06782 (7/5/2002) --- NASA astronaut Peggy Whitson installs a Solidification Using a Baffle in Sealed Ampoules (SUBSA) Process Control Module in the Microgravity Science Glovebox (MSG). The SUBSA objective is to advance our understanding of the processes involved in semiconductor crystal growth. It offers a gradient freeze furnace for materials science investigations that can reach 850°C. Samples are contained in transparent quartz or ceramic ampoules with high definition video imaging available in real-time along with remote commanding of thermal control parameters.