Today in history

April 25, 1990–The crew of the U.S. space shuttle Discovery places the Hubble Space Telescope, a long-term space-based observatory, into a low orbit around Earth.

The space telescope, conceived in the 1940s, designed in the 1970s, and built in the 1980s, was designed to give astronomers an unparalleled view of the solar system, the galaxy, and the universe. Initially, Hubble’s operators suffered a setback when a lens aberration was discovered, but a repair mission by space-walking astronauts in December 1993 successfully fixed the problem, and Hubble began sending back its first breathtaking images of the universe.

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