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.

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.

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.

M101: A Pinwheel in Many Colors

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 new Hubble image reveals the gigantic Pinwheel galaxy, one of the best known examples of "grand design spirals", and its supergiant star-forming regions in unprecedented detail. The image is the largest and most detailed photo of a spiral galaxy ever taken with Hubble.

This new Hubble image reveals the gigantic Pinwheel galaxy, one of the best known examples of "grand design spirals", and its supergiant star-forming regions in unprecedented detail. The image is the largest and most detailed photo of a spiral galaxy ever taken with Hubble.

Wired Space Photo of the Day: Glowing Pinwheel Galaxy

Space Photo of the Day 2013

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.

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.

Logarithmic Spirals.  Uncomfortably close Typhoon Rammasun (right) and 25 million light-year distant galaxy M101 don't seem to have much in common. But they do look amazingly alike: each with arms exhibiting the shape of a simple and beautiful mathematical curve.

Logarithmic Spirals. Uncomfortably close Typhoon Rammasun (right) and 25 million light-year distant galaxy M101 don't seem to have much in common. But they do look amazingly alike: each with arms exhibiting the shape of a simple and beautiful mathematical curve.

Pinwheel Galaxy. Pink Green.

Pinwheel Galaxy. Pink Green.

M101 Pinwheel Galaxy | Kekaha, Kaua`i, Hawai`i

M101 Pinwheel Galaxy | Kekaha, Kaua`i, Hawai`i

Found! Seven Dwarfs Surround The ‘Pinwheel Galaxy’ Field Of View

Found! Seven Dwarfs Surround The ‘Pinwheel Galaxy’ Field Of View

Image of the Day: Brilliant Supernova 12 hours After it Exploded in the Pinwheel Galaxy

Image of the Day: Brilliant Supernova 12 hours After it Exploded in the Pinwheel Galaxy

Astrophotographer John Chumack took this image of The Pinwheel Galaxy, also called the Triangulum Galaxy or M33, after 4.3 hours of exposure... Credit  John Chumack

Astrophotographer John Chumack took this image of The Pinwheel Galaxy, also called the Triangulum Galaxy or M33, after 4.3 hours of exposure... Credit John Chumack

The Pinwheel Galaxy in visible light vs. infrared. | 9 Pictures That Will Make You See The Universe Differently

The Pinwheel Galaxy in visible light vs. infrared. | 9 Pictures That Will Make You See The Universe Differently

This is an uncommonly beautiful image of M101, the Pinwheel Galaxy, captured by photographer John Purvis on a clear night. It's a rare gem, because M101 is especially difficult to photograph, being so far away and so faint. It requires long exposures, and a lot of patience.

A Galaxy Far, Far Away

This is an uncommonly beautiful image of M101, the Pinwheel Galaxy, captured by photographer John Purvis on a clear night. It's a rare gem, because M101 is especially difficult to photograph, being so far away and so faint. It requires long exposures, and a lot of patience.

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