Abell 71 – A Planetary Nebula Shaped by the Interstellar Medium
Abell 71 – A Planetary Nebula Shaped by the Interstellar Medium Abell 71, also cataloged as PN G084.9+04.4 and PK 85+4.1, is a planetary nebula located in the constellation of Cygnus. Discovered by George Ogden Abell during the compilation of his catalog of low surface brightness planetary nebulae, it has become one of the most
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