On May 11, 2009, the space shuttle Atlantis launched on the fifth and final servicing mission for the Hubble Space Telescope

During mission STS-125, astronauts installed two new instruments on the telescope. One was the Cosmic Origins Spectrograph, which allowed Hubble to observe faint objects in the cosmos in ultraviolet light. This would help researchers study the formation of galaxies and other large-scale structures in the universe. 

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