GALILEO'S TELESCOPE AT 400: From Spyglasses to Hubble

Beyond Galileo's Telescope
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Like Galileo's telescope, the Chandra X-ray Observatory is also celebrating an anniversary in 2009: The space telescope was sent into orbit on July 23, 1999 (above, Chandra sails into orbit just after deployment from the space shuttle Columbia).

Ten years later Chandra's mission is still a "go," returning pictures and data that illuminate parts of the universe invisible to the human eye.

Get the full story of Galileo's telescope >>
—Photograph courtesy NASA via AP
 
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