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- Q832978 subject Q1031119.
- Q832978 subject Q7009497.
- Q832978 subject Q7847065.
- Q832978 subject Q8412718.
- Q832978 subject Q8735551.
- Q832978 abstract "NGC 2359 (also known as Thor's Helmet) is an emission nebula in the constellation Canis Major. The nebula is approximately 3,670 parsecs (11.96 thousand light years) away and 30 light-years in size. The central star is the Wolf-Rayet star WR7, an extremely hot giant thought to be in a brief pre-supernova stage of evolution. It is similar in nature to the Bubble Nebula, but interactions with a nearby large molecular cloud are thought to have contributed to the more complex shape and curved bow-shock structure of Thor's Helmet.It is also catalogued as Sharpless 2-298 and Gum 4.The nebula has an overall bubble shape, but with complex filamentary structures. The nebula contains several hundred solar masses of ionised material, plus several thousand more of unionised gas. It is largely interstellar material swept up by winds from the central star, although some material does appear to be enriched with the products of fusion and is likely to come directly from the star. The expansion rate of different portions of the nebula varies from 10km/s to at least 30km/s, leading to age estimates of 78,500 - 236,000 years. The nebula has been studied at radio and x-ray wavelengths, but it is still unclear whether it was produced at the class O main sequence stage of development, as a red supergiant, luminous blue variable, or mainly as a Wolf-Rayet star.".
- Q832978 thumbnail NGC_2359.jpg?width=300.
- Q832978 wikiPageExternalLink apod_search?tquery=ngc+2359.
- Q832978 wikiPageExternalLink ngc2359.htm.
- Q832978 wikiPageExternalLink thors-helmet-ngc-2359.
- Q832978 wikiPageExternalLink Thors_Helmet_Nebula.html.
- Q832978 wikiPageExternalLink eso1238.
- Q832978 wikiPageExternalLink n2359.htm.
- Q832978 wikiPageWikiLink Q1031119.
- Q832978 wikiPageWikiLink Q10538.
- Q832978 wikiPageWikiLink Q151991.
- Q832978 wikiPageWikiLink Q202265.
- Q832978 wikiPageWikiLink Q2565783.
- Q832978 wikiPageWikiLink Q2703.
- Q832978 wikiPageWikiLink Q2721889.
- Q832978 wikiPageWikiLink Q3937.
- Q832978 wikiPageWikiLink Q5174338.
- Q832978 wikiPageWikiLink Q5898.
- Q832978 wikiPageWikiLink Q6251.
- Q832978 wikiPageWikiLink Q7009497.
- Q832978 wikiPageWikiLink Q725471.
- Q832978 wikiPageWikiLink Q742741.
- Q832978 wikiPageWikiLink Q752071.
- Q832978 wikiPageWikiLink Q7847065.
- Q832978 wikiPageWikiLink Q8412718.
- Q832978 wikiPageWikiLink Q8735551.
- Q832978 comment "NGC 2359 (also known as Thor's Helmet) is an emission nebula in the constellation Canis Major. The nebula is approximately 3,670 parsecs (11.96 thousand light years) away and 30 light-years in size. The central star is the Wolf-Rayet star WR7, an extremely hot giant thought to be in a brief pre-supernova stage of evolution.".
- Q832978 label "NGC 2359".
- Q832978 depiction NGC_2359.jpg.