
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. Here we see three wavelengths of infrared light: 3.6 microns (shown in blue), 4.5 microns (green) and 8 microns (red), as observed by NASA's Spitzer Space Telescope.
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