M51: The Whirlpool GalaxyM51: The Whirlpool Galaxy. From the #NASA #POTD site.https://apod.nasa.gov/apod/ap260114.html
M51: The Whirlpool GalaxyM51: The Whirlpool Galaxy. From the #NASA #POTD site.https://apod.nasa.gov/apod/ap260114.html
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