File:Dark Matter and Galaxies Part Ways in Collision between Hefty Galaxy Clusters (9934103513).jpg

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Description	Description: This composite image shows the distribution of dark matter, galaxies, and hot gas in the core of the merging galaxy cluster Abell 520. Data from Chandra (green) show the hot gas in the clusters and provides evidence that a collision took place. Optical data from Hubble and the Canada-France-Hawaii Telescope in Hawaii are shown in red, green, and blue. Starlight from galaxies within the clusters, which has been smoothed to show the location of most of the galaxies, is colored orange. Confirming a previous observation, this result reveals that a clump of dark matter resides near most of the hot gas, where very few galaxies are found. Creator: Chandra X-ray Observatory Center Date Created: 3/2/2012 Repository: Smithsonian Astrophysical Observatory Image ID: a520 Permanent URL: chandra.harvard.edu/photo/2012/a520/ View more collections from the Smithsonian Institution.
Date	25 September 2013, 09:03
Source	Dark Matter and Galaxies Part Ways in Collision between Hefty Galaxy Clusters
Author	Smithsonian Institution from United States
Permission (Reusing this file)	Smithsonian Institution @ Flickr Commons

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This image was originally posted to Flickr by Smithsonian Institution at https://flickr.com/photos/25053835@N03/9934103513. It was reviewed on 14 September 2016 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

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Image title	This composite image shows the distribution of dark matter, galaxies, and hot gas in the core of the merging galaxy cluster Abell 520. Data from Chandra (green) show the hot gas in the clusters and provides evidence that a collision took place. Optical data from Hubble and the Canada-France-Hawaii Telescope in Hawaii are shown in red, green, and blue. Starlight from galaxies within the clusters, which has been smoothed to show the location of most of the galaxies, is colored orange. Confirming a previous observation, this result reveals that a clump of dark matter resides near most of the hot gas, where very few galaxies are found.
Author	Chandra X-ray Observatory Center
Source	Chandra X-ray Observatory
Headline	A collision of massive galaxy clusters located about 2.4 billion light years from Earth.
Credit/Provider	NASA, ESA, CFHT, CXO, M.J. Jee (University of California, Davis), and A. Mahdavi (San Francisco State University)
Short title	Dark Matter and Galaxies Part Ways in Collision between Hefty Galaxy Clusters
Usage terms	http://chandra.harvard.edu/photo/image_use.html
Date and time of data generation	1 March 2012
Width	3,600 px
Height	2,315 px
Bits per component	8 8 8
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS6 (Macintosh)
File change date and time	09:03, 25 September 2013
Exif version	2.21
Color space	sRGB
Date and time of digitizing	09:44, 26 January 2012
Date metadata was last modified	05:03, 25 September 2013
Unique ID of original document	xmp.did:2A823E61282068119109B03D576BF495
Keywords	Abell 520
Contact information	cxcpub@cfa.harvard.edu http://chandra.harvard.edu 60 Garden St. Cambridge, MA, 02138 USA 617.496.7941
IIM version	4

File:Dark Matter and Galaxies Part Ways in Collision between Hefty Galaxy Clusters (9934103513).jpg

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