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Hubble - Large Space Telescope

First conceived in the 1940s and initially called the Large Space Telescope, the Hubble Space Telescope took decades of planning and research before it launched on April 24, 1990. Since launch, Hubble has overcome its troubled beginnings to perform innumerable science observations that have revolutionized humanity’s understanding of the universe. From determining the age of the universe to observing dramatic changes on celestial bodies in our own solar system, Hubble has become one of humanity’s greatest scientific instruments. This timeline describes Hubble’s history from the first proposal of a space telescope by Lyman Spitzer in 1946, through the completion of Hubble’s five servicing missions in the 1990s and 2000s, and to many of the significant observations and discoveries Hubble has made during its years in orbit.