Modern Era · North America · Science
1990
Hubble Space Telescope deployed
April 25, 1990
The space shuttle Discovery released Hubble into orbit above the atmosphere. Its first images came back blurry; the main mirror had been ground with a tiny error. Astronauts visited in 1993 and installed corrective optics. From then on, Hubble produced pictures of such depth that they changed how humans pictured the universe.
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