Microgravity Science Laboratory (MSL-1)

The Microgravity Science Laboratory (MSL) mission series was designed to build on the successes of previous microgravity missions and to explore new ways to observe and measure gravity's effect on chemical and physical processes. NASA chose Spacelab, which is a module built by the European Space Agency to fit inside the shuttle's cargo bay, as the microgravity laboratory for the MSL series. Flown aboard STS-83