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| Added: Wednesday, July 2, 2008 | ||||||||||||||
| Source: NASA's Chandra X-ray Observatory Podcasts | ||||||||||||||
Summary: About a hundred and forty years ago, the light from a supernova explosion in our galaxy reached the Earth, but no one saw it. The discovery of this supernova remnant helps astronomers better understand how often these stellar time-bombs go off in our galaxy. |
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