File:Abell 2029 composite Chandra.jpg

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DescriptionAbell 2029 composite Chandra.jpg	English: Abell 2029 is composed of thousands of galaxies (optical image, right) enveloped in a gigantic cloud of hot gas (X-ray image, left), and an amount of dark matter equivalent to more than a hundred trillion Suns. Both the gas and the galaxies are confined to the cluster primarily by the gravity of the dark matter. If this galaxy cluster is a representative sample of the universe, the Chandra observation indicates that 70 to 90 percent of the mass of the universe consists of dark matter - mysterious particles left over from the dense early universe that interact with each other and "normal" matter only through gravity.
Date	30 May 2003, 07:57:06
Source	http://chandra.harvard.edu/photo/2003/abell2029/abell2029_comp.jpg
Author	NASA (Chandra - SDSS II)

Licensing

	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.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

This file, which was originally posted to http://chandra.harvard.edu/photo/2003/abell2029/abell2029_comp.jpg, was reviewed on 10 December 2015 by reviewer INeverCry, who confirmed that it was available there under the stated license on that date.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:02, 16 September 2015		756 × 401 (167 KB)	Mylkomeda	User created page with UploadWizard

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Abell 2029

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Metadata

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Image title	Abell 2029 is composed of thousands of galaxies (optical image, right) enveloped in a gigantic cloud of hot gas (X-ray image, left), and an amount of dark matter equivalent to more than a hundred trillion Suns. Both the gas and the galaxies are confined to the cluster primarily by the gravity of the dark matter. If this galaxy cluster is a representative sample of the universe, the Chandra observation indicates that 70 to 90 percent of the mass of the universe consists of dark matter - mysterious particles left over from the dense early universe that interact with each other and "normal" matter only through gravity.
Author	Chandra X-ray Observatory Center
Source	Chandra X-ray Observatory
Headline	Galaxy cluster Abell 2029 is approximately one billion light years from Earth.
Credit/Provider	X-ray: NASA/CXC/UCI/A.Lewis et al. Optical: Pal.Obs. DSS
Short title	Hot News for Cold Dark Matter
Usage terms	http://chandra.harvard.edu/photo/image_use.html
Date and time of data generation	11 June 2003
Orientation	Normal
Horizontal resolution	57.002334594727 dpi
Vertical resolution	0.14866688996039 dpi
Exif version	2.21
Color space	Uncalibrated
Unique ID of original document	adobe:docid:photoshop:0690f02c-9359-11d7-a99f-fa8d7724f9f8
File change date and time	07:57, 30 May 2003
Software used	Adobe Photoshop 7.0
Date metadata was last modified	09:23, 22 August 2012
Keywords	Abell 2029
Contact information	cxcpub@cfa.harvard.edu http://chandra.harvard.edu 60 Garden St. Cambridge, MA, 02138 USA 617.496.7941
IIM version	4

File:Abell 2029 composite Chandra.jpg

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30 May 2003

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