Nasa esa logos
          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
          First light at the Subaru Telescope
          First light at the Subaru Telescope
          January 1999

          First scientific observations begin at the 8.2-m optical/infrared Subaru Telescope on Mauna Kea, Hawaii. Subaru is an Ritchey-Chretien reflecting telescope...

          View more

          NAOJ Subaru Telescope
          Historical Context
          Gemini North observatory is completed
          Gemini North observatory is completed
          January 1999

          The Gemini Observatory consists of twin 8.1-meter (26.58 feet) diameter optical/infrared telescopes. Gemini North (the Frederick C. Gillett Gemini Telescope)...

          View more

          About the Gemini Observatory
          Historical Context
          NASA launches first mission to return extraterrestrial material beyond Earth's moon
          NASA launches first mission to return extraterrestrial material beyond Earth's moon
          February 7, 1999

          Stardust is the first U.S. mission dedicated solely to a comet and was the first to return extraterrestrial material from outside the orbit of the moon....

          View more

          NASA Stardust mission
          Science Discovery
          Hubble Constant refined
          Hubble Constant refined
          Release date: May 25, 1999

          Hubble observations allow astronomers to refine the universe’s expansion rate to within 10 percent accuracy.

          OBJECT: NGC 4603

          CREDIT: J. Newman (Univ....

          View more

          HubbleSite press release
          Significant Image
          A closer encounter with Mars
          A closer encounter with Mars
          Release date: June 30, 1999

          Astronomers using the Hubble telescope take the sharpest views yet of the Red Planet during its closest approach to Earth in eight years. Dark sand dunes...

          View more

          HubbleSite press release
          Historical Context
          Chandra X-ray Observatory is launched
          Chandra X-ray Observatory is launched
          July 23, 1999

          The third member of the Great Observatory family, the Chandra X-Ray Observatory (CXO), is deployed from a Space Shuttle and boosted into a high-Earth orbit....

          View more

          NASA Mission: Chandra X-ray Observatory
          Mission Event
          Hubble is placed in safe mode
          November 13, 1999

          Since the second Servicing Mission in February 1997, three of Hubble’s six gyroscopes had failed, causing some concern among NASA officials. At the time,...

          View more

          Mission Event
          Servicing Mission 3A (STS-103)
          Servicing Mission 3A (STS-103)
          December 19-27, 1999

          In Part A of the two-part Third Servicing Mission, astronauts replaced the telescope’s six gyroscopes, which help the orbiting observatory point at celestial...

          View more

          NASA Space Shuttle Discovery Mission STS-103: Hubble Servicing Mission 3A
          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
          131美女做爰图片