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Picture Album: Out of This Whirl: the Whirlpool Galaxy (M51) and Companion Galaxy

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Out of This Whirl: the Whirlpool Galaxy (M51) and Companion Galaxy
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About This Image

The large Whirlpool Galaxy (left) is known for its sharply defined spiral arms. Their prominence could be the result of the Whirlpool's gravitational tug-of-war with its smaller companion galaxy (right).

Credit: NASA, ESA, S. Beckwith (STScI), and The Hubble Heritage Team (STScI/AURA)

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