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A constellation of the northern sky, representing Princess Andromeda of Greek mythology. Its brightest stars are Alpha Andromedae (Alpheratz) and Beta Andromedae (Mirach). It contains the notable double star Gamma Andromedae (Almach) and the 9th-magnitude planetary nebula NGC 7662. The constellation's best-known feature is the Andromeda Galaxy.

Subjects: Astronomy and Astrophysics.

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