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          A chronology of the Hubble Space Telescope Illustrates the mission's history from conception through its 25 years of ground-breaking observations and discoveries.
          Historical Context
          Voyager 1's "Pale Blue Dot"
          Voyager 1's "Pale Blue Dot"
          February 14, 1990

          The "Pale Blue Dot" is a part of the first-ever "portrait" of the solar system taken by the Voyager 1 space probe from more than 4 billion miles from Earth....

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          NASA's Visible Earth
          Mission Event
          Hubble Space Telescope launch
          Hubble Space Telescope launch
          April 24, 1990

          Hubble is shipped from Lockheed in California to the Kennedy Space Center in Florida in October,1989. There, it is launched into Earth orbit during the...

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          NASA Space Shuttle Discovery Mission STS-31: Hubble Space Telescope Deploy
          Milestone Release
          First image taken by Hubble's Wide Field Planetary Camera
          First image taken by Hubble's Wide Field Planetary Camera
          Release date: May 20, 1990

          (Right): First image taken with NASA's Hubble Space Telescope's Wide Field/Planetary Camera; (Left): Ground-based picture of the same region of the sky,...

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          HubbleSite press release
          Mission Event
          Spherical aberration is discovered in the primary mirror
          Spherical aberration is discovered in the primary mirror
          June 25, 1990

          After analyzing Hubble’s first pictures, astronomers discover that the telescope has “blurred vision,” caused by a slight distortion in the 2.4-meter primary...

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          Science Discovery
          Ring resolved around Supernova 1987A
          Ring resolved around Supernova 1987A
          Release date: August 29, 1990

          Hubble resolves, to an unprecedented detail of 0.1 arcsecond, a mysterious elliptical ring of material around the remnants of Supernova 1987A.

          OBJECT...

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          HubbleSite press release
          Milestone Release
          First science paper
          October 1, 1990

          The first science paper from a Hubble observation is submitted by Tod Lauer of the National Optical Astronomy Observatory in Tucson, Ariz. This paper...

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