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- Cat's_Eye_Nebula abstract "The Cat's Eye Nebula or 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, bubbles and sinewy arc-like features. In the center of the Cat's Eye there is a bright and hot star; around 1000 years ago this star lost its outer envelope, producing the nebula.Discovered by William Herschel on February 15, 1786, it was the first planetary nebula whose spectrum was investigated by the English amateur astronomer William Huggins in 1864. The results of the latter investigation demonstrated for the first time that planetary nebulae consist of hot gases, but not stars. The nebula has been observed across the full electromagnetic spectrum, from far-infrared to X-rays.Modern studies reveal several mysteries. The intricacy of the structure may be caused in part by material ejected from a binary central star, but as yet, there is no direct evidence that the central star has a companion. Also, measurements of chemical abundances reveal a large discrepancy between measurements done by two different methods, the cause of which is uncertain. Hubble Telescope observations revealed a number of faint rings around the Eye, which are spherical shells ejected by the central star in the distant past. The exact mechanism of those ejections, however, is unclear.".
- Cat's_Eye_Nebula thumbnail NGC6543.jpg?width=300.
- Cat's_Eye_Nebula wikiPageExternalLink ap991031.html.
- Cat's_Eye_Nebula wikiPageExternalLink ap100509.html.
- Cat's_Eye_Nebula wikiPageExternalLink ?id=7NfqpZxO_o0C.
- Cat's_Eye_Nebula wikiPageExternalLink index.html.
- Cat's_Eye_Nebula wikiPageExternalLink 01.
- Cat's_Eye_Nebula wikiPageExternalLink catseye.shtml.
- Cat's_Eye_Nebula wikiPageExternalLink sim-id?protocol=html&Ident=Cat's+Eye+Nebula.
- Cat's_Eye_Nebula wikiPageExternalLink NGC6543.html.
- Cat's_Eye_Nebula wikiPageExternalLink 1.
- Cat's_Eye_Nebula wikiPageExternalLink heic0414.html.
- Cat's_Eye_Nebula wikiPageID "250882".
- Cat's_Eye_Nebula wikiPageRevisionID "604028524".
- Cat's_Eye_Nebula absmagV "−0.2B".
- Cat's_Eye_Nebula appmagV "9.8".
- Cat's_Eye_Nebula caption "Composite image using optical images from the HST and X-ray data from the Chandra X-ray Observatory".
- Cat's_Eye_Nebula constellation Draco_(constellation).
- Cat's_Eye_Nebula distLy "3.3".
- Cat's_Eye_Nebula epoch Epoch_(astronomy).
- Cat's_Eye_Nebula hasPhotoCollection Cat's_Eye_Nebula.
- Cat's_Eye_Nebula name "Cat's Eye Nebula".
- Cat's_Eye_Nebula names "NGC 6543, Snail Nebula, Sunflower Nebula, , Caldwell 6".
- Cat's_Eye_Nebula notes "complex structure".
- Cat's_Eye_Nebula radiusLy "Core: 0.2 ly".
- Cat's_Eye_Nebula sizeV "Core: 20″".
- Cat's_Eye_Nebula type "-".
- Cat's_Eye_Nebula subject Category:Caldwell_objects.
- Cat's_Eye_Nebula subject Category:Draco_(constellation).
- Cat's_Eye_Nebula subject Category:NGC_objects.
- Cat's_Eye_Nebula subject Category:Planetary_nebulae.
- Cat's_Eye_Nebula type CaldwellObjects.
- Cat's_Eye_Nebula type Cloud111439690.
- Cat's_Eye_Nebula type NGCObjects.
- Cat's_Eye_Nebula type NaturalPhenomenon111408559.
- Cat's_Eye_Nebula type Nebula109366940.
- Cat's_Eye_Nebula type Object100002684.
- Cat's_Eye_Nebula type Phenomenon100034213.
- Cat's_Eye_Nebula type PhysicalEntity100001930.
- Cat's_Eye_Nebula type PhysicalPhenomenon111419404.
- Cat's_Eye_Nebula type PlanetaryNebula109394797.
- Cat's_Eye_Nebula type PlanetaryNebulae.
- Cat's_Eye_Nebula type Process100029677.
- Cat's_Eye_Nebula comment "The Cat's Eye Nebula or 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, bubbles and sinewy arc-like features.".
- Cat's_Eye_Nebula label "Cat's Eye Nebula".
- Cat's_Eye_Nebula label "Kattenoognevel".
- Cat's_Eye_Nebula label "Katzenaugennebel".
- Cat's_Eye_Nebula label "Mgławica Kocie Oko".
- Cat's_Eye_Nebula label "Nebulosa Occhio di Gatto".
- Cat's_Eye_Nebula label "Nebulosa Ojo de Gato".
- Cat's_Eye_Nebula label "Nebulosa Olho de gato".
- Cat's_Eye_Nebula label "Nébuleuse de l'Œil de Chat".
- Cat's_Eye_Nebula label "Туманность Кошачий Глаз".
- Cat's_Eye_Nebula label "سديم عين القط".
- Cat's_Eye_Nebula label "キャッツアイ星雲".
- Cat's_Eye_Nebula label "貓眼星雲".
- Cat's_Eye_Nebula sameAs Kočičí_oko_(mlhovina).
- Cat's_Eye_Nebula sameAs Katzenaugennebel.
- Cat's_Eye_Nebula sameAs Nebulosa_Ojo_de_Gato.
- Cat's_Eye_Nebula sameAs Nébuleuse_de_l'Œil_de_Chat.
- Cat's_Eye_Nebula sameAs Nebula_Mata_Kucing.
- Cat's_Eye_Nebula sameAs Nebulosa_Occhio_di_Gatto.
- Cat's_Eye_Nebula sameAs キャッツアイ星雲.
- Cat's_Eye_Nebula sameAs 고양이_눈_성운.
- Cat's_Eye_Nebula sameAs Kattenoognevel.
- Cat's_Eye_Nebula sameAs Mgławica_Kocie_Oko.
- Cat's_Eye_Nebula sameAs Nebulosa_Olho_de_gato.
- Cat's_Eye_Nebula sameAs m.01l710.
- Cat's_Eye_Nebula sameAs Q15829.
- Cat's_Eye_Nebula sameAs Q15829.
- Cat's_Eye_Nebula sameAs Cat's_Eye_Nebula.
- Cat's_Eye_Nebula wasDerivedFrom Cat's_Eye_Nebula?oldid=604028524.
- Cat's_Eye_Nebula depiction NGC6543.jpg.
- Cat's_Eye_Nebula isPrimaryTopicOf Cat's_Eye_Nebula.