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          Banner Timeline
          A chronology of the Hubble Space Telescope Illustrates the mission's history from conception through its 25 years of ground-breaking observations and discoveries.
          Significant Image
          Hubble reveals a "backwards" spiral galaxy
          Hubble reveals a "backwards" spiral galaxy
          Release date: February 7, 2002

          Most spiral galaxies have arms of gas and stars that trail behind as they turn. But this galaxy, called NGC 4622, appears to have two "leading" outer arms...

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          HubbleSite press release
          Historical Context
          Mars Odyssey space probe begins mapping the Red Planet
          Mars Odyssey space probe begins mapping the Red Planet
          February 19, 2002

          2001 Mars Odyssey is part of NASA's Mars Exploration Program, a long-term effort of robotic exploration of the Red Planet. The mission will globally map the...

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          NASA Mission: Mars Odyssey
          Mission Event
          Servicing Mission 3B (STS-109)
          Servicing Mission 3B (STS-109)
          March 1-12, 2002

          Astronauts install a powerful new instrument on Hubble, the Advanced Camera for Surveys, and a cryocooler designed to extend the life of Hubble’s infrared...

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          NASA Space Shuttle Columbia Mission STS-109: Hubble Servicing Mission 3B
          Milestone Release
          Hubble's new camera delivers breathtaking views of the universe
          Hubble's new camera delivers breathtaking views of the universe
          Release date: April 30, 2002

          Hubble's newly installed Advanced Camera for Surveys (ACS) can cover twice the area in less time than its "workhorse" camera, the Wide Field and Planetary...

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          HubbleSite press release
          Significant Image
          The Tadpole Galaxy: Distorted victim of cosmic collision
          The Tadpole Galaxy: Distorted victim of cosmic collision
          Release date: April 30, 2002

          This spiral galaxy is unlike the textbook images of stately galaxies. Its distorted shape was caused by a small interloper, a very blue, compact galaxy...

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          HubbleSite press release
          Historical Context
          NASA announces contract for Next Generation Space Telescope
          NASA announces contract for Next Generation Space Telescope
          September 11, 2002

          Based on two “Phase A” studies, NASA selects the design of TRW/Ball Aerospace to build the Next Generation Space Telescope (NGST). In “Phase B” the detailed...

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          HubbleSite press release
          Science Discovery
          Hubble makes a precise measure of an extrasolar world's true mass
          Hubble makes a precise measure of an extrasolar world's true mass
          Release date: December 3, 2002

          An international team of astronomers used the Hubble Space Telescope to help make a precise measurement of the mass of a planet outside our solar system. The...

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          HubbleSite press release
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