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Chandra X-ray Observatory
 
Chandra with Earth in the background

The Chandra Telescope is in orbit around Earth. Image Credit: NASA

      a powerful X-ray telescope




Sentence:
The Chandra X-ray Observatory is the world's most powerful X-ray telescope.



More Information:
http://chandra.harvard.edu/about/spacecraft.html   →
http://www.nasa.gov/mission_pages/chandra/main/index.html
http://chandra.harvard.edu/edu/games.html   →