ESA - Herschel - More about the infrared

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More about the infrared

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To the left is an image of Messier 82 taken at visible wavelengths. To the right is a composite image of the same galaxy, taken at infrared wavelengths by the Spitzer Space Telescope. The three wavelength bands are coded in red (longest wavelength), green, and blue (shortest wavelengths).

Credits: NASA/JPL-Caltech/R. Kennicutt (Cambridge, University of Arizona) and the SINGS team

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