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Messier 57: Difference between revisions

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(Created page with "thumb|Messier 57 or Ring Nebula The Ring Nebula (also catalogued as Messier 57, M57 or NGC 6720) is a planetary nebula in the northern...")
 
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[[File:375px-M57 The Ring Nebula.JPG|thumb|Messier 57 or Ring Nebula]]
[[File:375px-M57 The Ring Nebula.JPG|thumb|Messier 57 or Ring Nebula]]
The Ring Nebula (also catalogued as Messier 57, M57 or NGC 6720) is a planetary nebula in the northern constellation of [[Lyra]]. Such objects are formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf.Messier 57 is located south of the bright star [[Vega]], which forms the northwestern vertex of the Summer Triangle asterism. The nebula lies about 40% of the distance from Beta (β) to Gamma (γ) Lyrae,making it an easy target for amateur astronomers to find.
The Ring Nebula (also catalogued as Messier 57, M57 or NGC 6720) is a planetary nebula in the northern constellation of [[Lyra]]. Such objects are formed when a shell of ionized gas is expelled into the surrounding interstellar medium by a red giant star, which was passing through the last stage in its evolution before becoming a white dwarf.Messier 57 is located south of the bright star [[Vega]], which forms the northwestern vertex of the Summer Triangle asterism. The nebula lies about 40% of the distance from Beta (β) to Gamma (γ) Lyrae,making it an easy target for amateur astronomers to find.