Andromeda (play) also prophesied that the descendants of Perseus and Andromeda would become the rulers of Mycenae. Little is known of treatments of the Andromeda myth prior to Euripides. However, Sophocles wrote a play entitled "Andromeda", which covered the same story and was believed to have been performed around 450 BC. Sophocles' "Andromeda" is now lost except for a few fragments. Euripides treated earlier aspects of the Perseus myth in his earlier plays "Danae" (between 455 and 425 BC), which covered Perseus' birth, and "Dictys" (431 BC), which covered his defeat of Medusa. Information about "Andromeda" is largely based on later sources,
Andromeda Galaxy Andromeda Galaxy The Andromeda Galaxy (), also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth, and the nearest major galaxy to the Milky Way. Its name stems from the area of the sky in which it appears, the constellation of Andromeda. The 2006 observations by the Spitzer Space Telescope revealed that the Andromeda Galaxy contains approximately one trillion stars, more than twice the number of the Milky Way's estimated 200 to 400 billion stars. The Andromeda Galaxy's mass is estimated to be around 1.76 times that of the