In this photograph, astronaut David Hilmers conducts a life science experiment by using the Biorack Glovebox (GBX) during the International Microgravity Laboratory-1 (IML-1) mission. The Biorack was a large multipurpose facility designed for studying the effects of microgravity and cosmic radiation on numerous small life forms such as cells, tissues, small organisms, and plants. Located at the Biorack, the GBX was an enclosed environment that protected samples from contamination and prevented liquid from escaping. Crewmembers handled the specimens with their hands inside gloves that extended into the sealed work area. A microscope and video camera mounted on the GBX door were used to observe and document experiments. Managed by the Marshall Space Flight Center, the IML-1 mission was the first in a series of Shuttle flights dedicated to fundamental materials and life sciences research and was launched aboard the Shuttle Orbiter Discovery (STS-42) on January 22, 1992.