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This NASA handout shows an optical image of NGC 6543 from the first systematic survey of such objects in the solar neighborhood made with NASA's Chandra X-ray Observatory. A planetary nebula is a phase of stellar evolution that the sun should experience several billion years from now, when it expands to become a red giant and then sheds most of its outer layers, leaving behind a hot core that contracts to form a dense white dwarf star. (Photo by Reuters/NASA/STScI)
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