Thursday, October 30, 2014

Newscenter Update: Hubble Sees 'Ghost Light' From Dead Galaxies

October 30, 2014
Hubble Sees 'Ghost Light' from Dead Galaxies in Galaxy Cluster Abell 2744
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Hubble Sees 'Ghost Light' From Dead Galaxies

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.

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