The United States Microgravity Laboratory (USML) is a research facility designed to conduct experiments in a microgravity environment. It is primarily used aboard the Space Shuttle and the International Space Station (ISS) to study various scientific phenomena that can only be observed in low-gravity conditions. USML supports a wide range of research areas, including materials science, fluid dynamics, and biological studies. By providing a unique environment, it allows scientists to explore how different processes behave without the influence of Earth's gravity, leading to advancements in technology and our understanding of fundamental science.