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- Medusa_Nebula abstract "The Medusa Nebula is a large planetary nebula in the constellation of Gemini on the Canis Minor border. It also known as Abell 21 and Sharpless 274. It was originally discovered in 1955 by UCLA astronomer George O. Abell, who classified it as an old planetary nebula. The braided serpentine filaments of glowing gas suggests the serpent hair of Medusa found in ancient Greek mythology.Until the early 1970s, the Medusa was thought to be a supernova remnant. With the computation of expansion velocities and the thermal character of the radio emission, Soviet astronomers in 1971 concluded that it was most likely a planetary nebula.As the nebula is so big, its surface brightness is very low, with surface magnitudes of between +15.99 and +25 reported. Because of this most websites recommend at least an 8-inch (200 mm) telescope with an [O III] filter to find this object although probably possible to image with smaller apertures.[citation needed]".
- Medusa_Nebula thumbnail Medusa_nebula.jpg?width=300.
- Medusa_Nebula wikiPageExternalLink ap100612.html.
- Medusa_Nebula wikiPageExternalLink sharpless.py?s=274.
- Medusa_Nebula wikiPageExternalLink medusa%20nebula.htm.
- Medusa_Nebula wikiPageID "5642715".
- Medusa_Nebula wikiPageRevisionID "604795185".
- Medusa_Nebula absmagV "7.68".
- Medusa_Nebula appmagV "15.99".
- Medusa_Nebula caption "Medusa nebula, 24 inch telescope on Mt. Lemmon, AZ. Courtesy of Joseph D. Schulman".
- Medusa_Nebula constellation Gemini_(constellation).
- Medusa_Nebula distLy "1500.0".
- Medusa_Nebula epoch "J2000.0".
- Medusa_Nebula hasPhotoCollection Medusa_Nebula.
- Medusa_Nebula name "Medusa Nebula".
- Medusa_Nebula names "Sharpless 2-274, PK 205+14 1, Abel 21".
- Medusa_Nebula notes "Very large & very low surface brightness".
- Medusa_Nebula sizeV "4.0".
- Medusa_Nebula subject Category:Abell_planetary_nebulae.
- Medusa_Nebula subject Category:Gemini_(constellation).
- Medusa_Nebula subject Category:Planetary_nebulae.
- Medusa_Nebula subject Category:Sharpless_objects.
- Medusa_Nebula type Cloud111439690.
- Medusa_Nebula type NaturalPhenomenon111408559.
- Medusa_Nebula type Nebula109366940.
- Medusa_Nebula type Object100002684.
- Medusa_Nebula type Phenomenon100034213.
- Medusa_Nebula type PhysicalEntity100001930.
- Medusa_Nebula type PhysicalPhenomenon111419404.
- Medusa_Nebula type PlanetaryNebula109394797.
- Medusa_Nebula type PlanetaryNebulae.
- Medusa_Nebula type Process100029677.
- Medusa_Nebula type SharplessObjects.
- Medusa_Nebula comment "The Medusa Nebula is a large planetary nebula in the constellation of Gemini on the Canis Minor border. It also known as Abell 21 and Sharpless 274. It was originally discovered in 1955 by UCLA astronomer George O. Abell, who classified it as an old planetary nebula. The braided serpentine filaments of glowing gas suggests the serpent hair of Medusa found in ancient Greek mythology.Until the early 1970s, the Medusa was thought to be a supernova remnant.".
- Medusa_Nebula label "Abell 21".
- Medusa_Nebula label "Medusa Nebula".
- Medusa_Nebula label "Medusanebel".
- Medusa_Nebula label "Mgławica Meduza".
- Medusa_Nebula label "Sh2-274".
- Medusa_Nebula label "蛇妖星雲".
- Medusa_Nebula sameAs Medusanebel.
- Medusa_Nebula sameAs Abell_21.
- Medusa_Nebula sameAs Sh2-274.
- Medusa_Nebula sameAs 메두사_성운.
- Medusa_Nebula sameAs Mgławica_Meduza.
- Medusa_Nebula sameAs m.0dxwrz.
- Medusa_Nebula sameAs Q1148673.
- Medusa_Nebula sameAs Q1148673.
- Medusa_Nebula sameAs Medusa_Nebula.
- Medusa_Nebula wasDerivedFrom Medusa_Nebula?oldid=604795185.
- Medusa_Nebula depiction Medusa_nebula.jpg.
- Medusa_Nebula isPrimaryTopicOf Medusa_Nebula.
