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The Andromeda galaxy, M31, our Milky Way's closest neighbor, is the most distant object in the sky that you can see with your unaided eye. See a gallery of Andromeda in different wavelengths:http://oak.ctx.ly/r/91oz
Below, ESA Herschel space observatory image of Andromeda (M31) using both PACS and SPIRE instruments to observe at infrared wavelengths of 70 mm (blue), 100 mm (green) and 160 mm and 250 mm combined (red).
Penzant Metallon Zzyzup shared Space.com's photo.
The Andromeda galaxy, M31, our Milky Way's closest neighbor, is the most distant object in the sky that you can see with your unaided eye. See a gallery of Andromeda in different wavelengths:http://oak.ctx.ly/r/91oz
Below, ESA Herschel space observatory image of Andromeda (M31) using both PACS and SPIRE instruments to observe at infrared wavelengths of 70 mm (blue), 100 mm (green) and 160 mm and 250 mm combined (red).
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