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The universe is an infinite sea of galaxies, which are majestic star-cities. When galaxies group together in massive clusters, some of them can be ripped apart by the gravitational tug of other galaxies. It's a giant cosmic mosh pit. Astronomers using the Hubble Space Telescope to probe the massive galaxy cluster Abell 2744 nicknamed Pandora's Cluster have found forensic evidence of galaxies torn apart long ago. It's in the form of a phantom-like faint glow filling the space between the galaxies. This glow comes from stars scattered into intergalactic space as a result of a galaxy's disintegration.
via HubbleSite NewsCenter -- Latest News Releases
http://hubblesite.org/newscenter/archive/releases/2014/43/
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