Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)
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Planetary Nebula Abell 21 in the constellation of Gemini, Jean-Pierre Lees
Planetary Nebula Abell 21 in the constellation of Gemini
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Planetary Nebula Abell 21 in the constellation of Gemini

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Planetary Nebula Abell 21 in the constellation of Gemini, Jean-Pierre Lees
Planetary Nebula Abell 21 in the constellation of Gemini
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Planetary Nebula Abell 21 in the constellation of Gemini

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Description

The Medusa Nebula is a planetary nebula in the constellation of Gemini. It is also known as Abell 21 and Sharpless 2-274. It was originally discovered in 1955 by University of California, Los Angeles astronomer George O. Abell, who classified it as an old planetary nebula (Source Wikipedia).

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