English: Black Eye Galaxy (M64) is an isolated spiral galaxy 17 million ly away in the constellation of Coma Berenices - A dark band of absorbing dust in front of the galaxy's bright nucleus gave rise to its name - Outer ring-like structure, inner non-barred ring/spiral with its spiral arms fairly tightly wound - Two counter-rotating disks in the interstellar medium suggests a merger with a gas-rich satellite galaxy in a retrograde orbit -
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