Scientists have discovered new details about a 2,000-year-old supernova with the help of a NASA mission. The study focused on a supernova remnant called RCW 86, observed by astronomers for years. Scientists have discovered new details about a 2,000-year-old supernova with the help of a NASA mission. The study focused on a supernova remnant called RCW 86, observed by astronomers for years. Earlier observations by NASA’s Chandra X-ray Observat... [1144 chars]
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