| CHANDRA X-RAY CENTER Harvard-Smithsonian Center for Astrophysics 60 Garden Street, Cambridge, MA 02138 | June, 2000 Chandra Specifications For more information visit: http://chandra.harvard.edu |   | 
| NASA's Chandra X-Ray Center | |
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                  An X-ray telescope is the only way astronomers can observe
                  the hot regions of the universe. The most powerful optical
                  telescopes, such as the Hubble Space Telescope, cannot see
                  the vast clouds of hot gas that stretch millions of light
                  years across and contain enough matter to make hundreds of
                  trillions of stars. X-ray telescopes allow us to image matter
                  swirling as close as 90 kilometers from the event horizon of
                  a stellar black hole or to track the expansion of a hot gas
                  bubble produced by an exploding star.
               Chandra is the third of NASA's Great Observatories. The
                  mirrors on Chandra are the largest, most precisely shaped and
                  aligned, and smoothest mirrors ever constructed. The images
                  Chandra makes are twenty-five times sharper than the best
                  previous X-ray telescope. Chandra, which was launched by the
                  Space Shuttle on July 23, 1999, is helping scientists to
                  better understand the hot, turbulent regions of space and
                  answer fundamental questions about the origin, evolution, and
                  destiny of the universe. | |
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|  NASA Marshall Spaceflight Center |  Smithsonian Astrophysical Observatory |