The Medusa Nebula is a faint and large planetary nebula which can be found in the constelation Gemini, close to Canis Minor.

It lies at a distance of 1.500 light years, has a diameter of about 4 light years and is considered a very old planetary nebula.
It has such a low surface brightness that it was only discovered in 1955.

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Image data

Name SH2-274 – The Medusa Nebula
Type Planetary nebula
Constellation Gemini
Right ascension 07h 29m 02s
Declination +13° 14′ 48″
Distance 1.500 ly
Other designations Abell 21