File:Galaxy Cluster Abell 1689 (4423351940).jpg

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Release Date: March 10, 2010 - Distant galaxy clusters mysteriously stream at a million miles per hour along a path roughly centered on the southern constellations Centaurus and Hydra. A new study led by Alexander Kashlinsky at NASA's Goddard Space Flight Center in Greenbelt, Md., tracks this collective motion -- dubbed the "dark flow" -- to twice the distance originally reported, out to more than 2.5 billion light-years.

Abell 1689, redshift 0.181.

Credit: NASA/Goddard Space Flight Center/Scientific Visualization Studio/ESA/L. Bradley/JHU

To learn more go to:

<a href="http://www.nasa.gov/centers/goddard/news/releases/2010/10-023.html" rel="nofollow">www.nasa.gov/centers/goddard/news/releases/2010/10-023.html</a>

To see other visualizations related to this story go to:

<a href="http://svs.gsfc.nasa.gov/goto?10580" rel="nofollow">svs.gsfc.nasa.gov/goto?10580</a>
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Source Galaxy Cluster Abell 1689
Author NASA Goddard Space Flight Center from Greenbelt, MD, USA

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This image was originally posted to Flickr by NASA Goddard Photo and Video at https://flickr.com/photos/24662369@N07/4423351940 (archive). It was reviewed on 11 May 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

11 May 2018

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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