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Making head or tail of a galactic landscape
Making head or tail of a galactic landscape
Astronomers have used data from NASA's Chandra X-ray Observatory to capture a dramatic image of an enormous tail of hot gas stretching for more than a million light years behind a group of galaxies that is falling into the depths of an even-larger cluster of galaxies. Discoveries like this help astronomers learn about the environment and conditions under which the Universe's biggest structures evolve.
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Dragon- Senior Administrator
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Re: Making head or tail of a galactic landscape

Credit: X-ray: NASA/CXC/Univ. of Geneva, D. Eckert. Optical: SDSS provided by CDS through Aladin
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Re: Making head or tail of a galactic landscape

Credit: X-ray: NASA/CXC/Univ. of Geneva, D. Eckert. Optical: SDSS provided by CDS through Aladin
Source / Image Courtesy
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Re: Making head or tail of a galactic landscape

Credit: X-ray: NASA/CXC/Univ. of Geneva, D. Eckert. Optical: SDSS provided by CDS through Aladin.
Source / Image Courtesy
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Re: Making head or tail of a galactic landscape
Abell 2142 is a galaxy cluster, one of the largest structures in the Universe, containing hundreds of galaxies and huge amounts of hot gas.
Chandra captured a smaller galaxy group, with a handful of galaxies, plummeting toward Abell 2142.
Behind this diving galaxy group is a long tail of X-rays extending for over a million light years.
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