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News for Norther Colorado and the world

Tuesday, March 3, 2015

Posts Tagged ‘outer halo’

Astronomy Picture of the Day

Astronomy Picture of the Day

Similar in size to the Milky Way, elliptical galaxy NGC 7600 is about 160 million light-years distant. In this deep image, spanning about 1/2 degree on the sky toward the constellation Aquarius, NGC 7600 sports a remarkable outer halo of nested shells and broad circumgalactic structures. The tantalizing features can be explained by the accretion of dark matter and stars on a cosmic timescale.     Shell Galaxy NGC 7600  Image Credit & Copyright: Ken Crawford ... Full Story

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