This image shows the Whirlpool galaxy, also known as Messier 51 and NGC 5194/5195, which is actually a pair of galaxies. Located approximately 23 million light-years away, it resides in the constellation Canes Venatici. This image combines two visible light wavelengths (in blue and green) and infrared light (in red) seen by NASA's Spitzer Space Telescope.
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