The Space Shuttle Discovery is one of NASA's most famous space shuttles, first launched on August 30, 1984. It completed a total of 39 missions, making it the most flown spacecraft in the shuttle fleet. Discovery played a key role in deploying satellites, including the Hubble Space Telescope, and contributed to the construction of the International Space Station. Discovery was retired in 2011 after its final mission, STS-133. It is known for its significant contributions to space exploration and science, including delivering modules and supplies to the International Space Station and conducting important research in low Earth orbit.