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|Description||Description: This composite image shows the massive galaxy cluster MACSJ0717.5+3745 (MACSJ0717, for short) where four separate galaxy clusters have been involved in a collision --the first time such a phenomenon has been documented. In this composite image, data from NASA's Chandra X-ray Observatory reveal the cluster's hot gas, while an optical image from the Hubble Space Telescope shows the individual galaxies in the system. The hot gas in this image is color-coded to show temperature, where the coolest gas is reddish purple, the hottest gas is blue, and the temperatures in between are purple.
Creator/Photographer: Chandra X-ray Observatory
NASA's Chandra X-ray Observatory, which was launched and deployed by Space Shuttle Columbia on July 23, 1999, is the most sophisticated X-ray observatory built to date. The mirrors on Chandra are the largest, most precisely shaped and aligned, and smoothest mirrors ever constructed. Chandra is helping scientists better understand the hot, turbulent regions of space and answer fundamental questions about origin, evolution, and destiny of the Universe. The images Chandra makes are twenty-five times sharper than the best previous X-ray telescope. NASA's Marshall Space Flight Center in Huntsville, Ala., manages the Chandra program for NASA's Science Mission Directorate in Washington. The Smithsonian Astrophysical Observatory controls Chandra science and flight operations from the Chandra X-ray Center in Cambridge, Massachusetts.
Medium: Chandra telescope x-ray
Persistent URL: 
Repository: Smithsonian Astrophysical Observatory
Gift line: X-ray (NASA/CXC/IfA/C. Ma et al.); Optical (NASA/STScI/IfA/C. Ma et al.)Accession number: MACSJ0717
|Date||26 May 2009, 15:39|
|Source||Cosmic Heavyweights in Free-For-All: One of the most complex galaxy clusters, located about 5.4 billion light years from Earth.|
|Author||Smithsonian Institution from United States|
(Reusing this file)
|This image was taken from Flickr's The Commons. The uploading organization tagged it with no known copyright restrictions there because one or more of the following reasons apply:
More information can be found at http://flickr.com/commons/usage/
|This image was originally posted to Flickr by Smithsonian Institution at http://flickr.com/photos/25053835@N03/3567927148. It was reviewed on 28 July 2009 by the FlickreviewR robot and confirmed to be licensed under the terms of the No known copyright restrictions.|
|Size, bytes||1.10445825195 мб|
|Orientation of image||1|
|Image resolution in width direction||72|
|Image resolution in height direction||72|
|Unit of X and Y resolution||2|
|Color space information||1|
|Exif image width||2916|
|Exif image length||2829|
|Software used||Adobe Photoshop CS4 Windows|
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