United States Microgravity experiments are prepared to be flown on Space Shuttle mission STS-87 in the Space Station Processing Facility at Kennedy Space Center.

United States Microgravity Payload-4 (USMP-4) experiments are prepared to be flown on Space Shuttle mission STS-87 in the Space Station Processing Facility at Kennedy Space Center (KSC). Seen in the foreground at right is the USMP-4 logo with the acronyms of its experiments. Above the American flag at left is the MEPHISTO experiment, a cooperative American and French investigation of the fundamentals of crystal growth. Scientists will study changes in solidification rates, temperature, and interface shape of an alloy to understand how these changes affect composition and properties of the metal produced. Under the multi-layer insulation with the American flag and mission logo is the Space Acceleration Measurement System, or SAMS, which measures the microgravity conditions in which the experiments are conducted. All USMP-4 experiments are scheduled for launch aboard STS-87 on Nov. 19 from KSC