File:Hubble image of MACS J0717 with mass overlay.jpg

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摘要

描述	English: This enormous image shows Hubble’s view of massive galaxy cluster MACS J0717.5+3745. The large field of view is a combination of 18 separate Hubble images. Studying the distorting effects of gravity on light from background galaxies, a team of astronomers has uncovered the presence of a filament of dark matter extending from the core of the cluster. The location of the dark matter is revealed in a map of the mass in the cluster and surrounding region, shown here in blue. The filament visibly extends out and to the left of the cluster core. Using additional observations from ground-based telescopes, the team was able to map the filament’s structure in three dimensions, the first time this has ever been done. The filament was discovered to extend back from the cluster core, meaning we are looking along it.
日期	2012年10月15日, 18:00:00
来源	http://www.spacetelescope.org/images/heic1215a/
作者	NASA, ESA, Harald Ebeling (University of Hawaii at Manoa) & Jean-Paul Kneib (LAM)

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在线著作权声明
提供人	NASA, ESA, Harald Ebeling (University of Hawaii at Manoa) & Jean-Paul Kneib (LAM)
来源	ESA/Hubble
使用条款	Creative Commons Attribution 3.0 Unported license
简称	Hubble image of MACS J0717 with mass overlay
图像标题	This enormous image shows Hubble’s view of massive galaxy cluster MACS J0717.5+3745. The large field of view is a combination of 18 separate Hubble images. Studying the distorting effects of gravity on light from background galaxies, a team of astronomers has uncovered the presence of a filament of dark matter extending from thecore of the cluster. The location of the dark matter is revealed in a map of the mass in the cluster and surrounding region, shown here in blue. The filament visibly extends out and to the left of the cluster core. Using additional observations from ground-based telescopes, the team was able to map the filament’s structure in three dimensions, the first time this has ever been done. The filament was discovered to extend back from the cluster core, meaning we are looking along it.
数据生成日期时间	2012年10月15日 (一) 18:00
著作权状况	版权状态未设定
关键词	MACS J0717.5+3745
联系信息	-{R\|http://www.spacetelescope.org/}- Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany