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The Cat's Eye Nebula (NGC 6543) is a planetary nebula in the constellation of Draco. Structurally, it is one of the most complex nebulae known, with high-resolution Hubble Space Telescope observations revealing remarkable structures such as knots, jets and sinewy arc-like features. It was discovered by William Herschel on February 15, 1786, and was the first planetary nebula whose spectrum was ...
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the cat's eye nebula

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Published: 5 months, 2 weeks ago (Thu, 02 Jul 2009 06:52:49 PDT); 26 Kb
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