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Since its launch on July 23, 1999, the Chandra X-ray Observatory has been NASA's flagship mission for X-ray astronomy, taking its place in the fleet of "Great Observatories."
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How Far Away Are They?
Marusa Bradac: I do astronomy because it fascinates me. And it is the simplest things... [More (27 Aug 08)] |
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Revised: May 28, 2008
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