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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.
          Historical Context
          Evidence is published that the expansion rate of the universe is accelerating
          Evidence is published that the expansion rate of the universe is accelerating
          1998

          Two teams of astronomers—the High-z Supernova Search Team, led by Adam Riess and Brian Schmidt, and the Supernova Cosmology Project, led by Saul...

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          Science Discovery
          Hubble provides a clear image of Saturn's aurora
          Hubble provides a clear image of Saturn's aurora
          Release date: January 7, 1998

          Saturn image, taken by the Hubble telescope in ultraviolet light, reveals glowing, swirling material at Saturn's poles rising more than a thousand miles...

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          HubbleSite press release
          Science Discovery
          Preliminary evidence for an accelerating universe
          Preliminary evidence for an accelerating universe
          Release date: January 8, 1998

          These Hubble Space Telescope images pinpoint three distant supernovae, which exploded and died billions of years ago. Scientists are using these faraway...

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          HubbleSite press release
          Historical Context
          The first Very Large Telescope (VLT) array opens
          The first Very Large Telescope (VLT) array opens
          First Light: May 25, 1998

          The first of the European Southern Observatory's four Very Large Telescope (VLT) arrays, Antu, opens at Cerro Paranal in Chile. The large reflecting...

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          ESO's Very Large Telescope
          Significant Image
          Close-up view of Galaxy NGC 4314
          Close-up view of Galaxy NGC 4314
          Release date: June 11, 1998

          This Hubble telescope snapshot reveals clusters of infant stars that formed in a ring around the core of the barred-spiral galaxy NGC 4314.

          OBJECT: NGC...

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          HubbleSite press release
          Mission Event
          HOST Mission (STS-95)
          HOST Mission (STS-95)
          October 29-November 7, 1998

          Among several STS-95 mission objectives, the Hubble Space Telescope Orbiting Systems Test (HOST) carries out experiments on instruments planned for Hubble...

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          NASA Space Shuttle Discovery Mission STS-95
          Historical Context
          Assembly of the International Space Station begins
          Assembly of the International Space Station begins
          November 20, 1998

          The first International Space Station assembly Mission, ISS Assembly Mission 1 A/R, was launched atop a Russian Proton rocket carrying the Zarya Control...

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          International Space Station: Zarya
          Pre-launch - 1990 - 1991 - 1992 - 1993 - 1994 - 1995 - 1996 - 1997 - 1998 - 1999 - 2000 - 2001 - 2002 - 2003 - 2004 - 2005 - 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013 - 2014 - 2015
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