Sh2-206 vs Sh2-86
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Sh2-206
Sh2-206, also designated as NGC 1491, is an H II region and bright emission nebula located in the constellation Perseus. It was discovered by the astronomer William Herschel in 1790 and is located roughly 11,000 light-years from Earth. The nebula is ionized and illuminated by the ultraviolet radiation of a central, massive star, creating a glowing cloud of hydrogen gas. It is studied by astronomer...
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Sh2-86
Sh2-86 is an H II emission nebula located in the constellation Vulpecula. It is closely associated with the young open star cluster NGC 6823 and serves as a primary site of active star formation within the Vulpecula OB1 stellar association. The region is cataloged within the Sharpless catalog of nebulae, which was compiled by astronomer Stewart Sharpless. Ultraviolet radiation from the cluster's h...
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