Science

Published on January 29th, 2013 | by James Ayre

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Andromeda Galaxy Seen In A New Way, Nearest Galaxy To The Milky Way Imaged By Herschel Space Telescope

January 29th, 2013 by

The Andromeda Galaxy, the nearest galaxy to the Milky Way (our Galaxy), has been captured in two new “eye-catching” images taken by the Herschel space observatory.

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Located about two million light years away, the Andromeda galaxy (Messier 31), is the closest large galaxy us. It’s estimated to contain a good number more stars than the Milky Way, but less overall mass.

“Herschel, a European Space Agency mission with important NASA contributions, sees the longer-wavelength infrared light from the galaxy, revealing its rings of cool dust. Some of this dust is the very coldest in the galaxy — only a few tens of degrees above absolute zero.”


“In both views, warmer dust is highlighted in the central regions by different colors. New stars are being born in this central, crowded hub, and throughout the galaxy’s rings in dusty knots. Spokes of dust can also be seen between the rings.”

The first image was created from data taken by Herschel’s Photodetecting Array Camera and Spectrometer (PACS) and spectral and photometric imaging receiver (SPIRE). And the second, only from data taken by the SPIRE instrument. The SPIRE instruments captures the longest of wavelengths detectable by Herschel.

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“Herschel is a European Space Agency cornerstone mission, with science instruments provided by consortia of European institutes and with important participation by NASA. NASA’s Herschel Project Office is based at NASA’s Jet Propulsion Laboratory, Pasadena, Calif. JPL contributed mission-enabling technology for two of Herschel’s three science instruments.”

Source: NASA/Jet Propulsion Laboratory

Image Credits: ESA/NASA/JPL-Caltech/NHSC

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About the Author

's background is predominantly in geopolitics and history, but he has an obsessive interest in pretty much everything. After an early life spent in the Imperial Free City of Dortmund, James followed the river Ruhr to Cofbuokheim, where he attended the University of Astnide. And where he also briefly considered entering the coal mining business. He currently writes for a living, on a broad variety of subjects, ranging from science, to politics, to military history, to renewable energy. You can follow his work on Google+.



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