This image of the Pinwheel Galaxy, also known as M101, combines data in the infrared, visible, ultraviolet and X-rays from four of NASA's space-based telescopes. This multi-spectral view shows that both young and old stars are evenly distributed along M101's tightly-wound spiral arms.

This spectacular spiral galaxy is known to astronomers as Messier 83. Colloquially, it is also called the Southern Pinwheel due to its similarity to the more northerly Pinwheel galaxy Messier 101. NASAs Spitzer Space Telescope shows us, in spectacular detail, the infrared structure of what many think of as our own Milky Way galaxys smaller cousin.

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Grand design spiral, the gigantic Pinwheel Galaxy. Supergiant star-forming regions. 23 million ly distance, constellation of Ursa Major; ESA/NASA

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This spectacular spiral galaxy is known to astronomers as Messier 83. Colloquially, it is also called the Southern Pinwheel due to its similarity to the more northerly Pinwheel galaxy Messier 101. NASAs Spitzer Space Telescope shows us, in spectacular detail, the infrared structure of what many think of as our own Milky Way galaxys smaller cousin.

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Spiral Galaxy M101 - The Pinwheel Galaxy The Pinwheel Galaxy is located in the constellation Ursa Major (a portion of which is known commonly as the big dipper) at a distance of 21 million light-years from Earth. Before Hubble’s pan of the Andromeda Galaxy, this was the most detail image of a galaxy ever taken.

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