STS-31 was a space shuttle mission that launched on April 24, 1990, using the Space Shuttle Discovery. The primary objective of this mission was to deploy the Hubble Space Telescope, a groundbreaking observatory designed to capture high-resolution images of celestial objects. The mission lasted just over five days, during which the crew successfully released the Hubble Space Telescope into low Earth orbit. This deployment marked a significant milestone in astronomy, allowing scientists to observe the universe in unprecedented detail and leading to numerous discoveries about galaxies, stars, and planets.