Ghost Light From Dead Galaxies - A Hubble Halloween

4 billion light-years away, inside a collection of nearly 500 galaxies called Pandora's Cluster, are the faint, ghostly glow of stars gravitationally ripped apart several billion years ag. The scattered stars are no longer bound to any one galaxy and drift freely between galaxies in the cluster. By observing the light from the orphaned stars, Hubble astronomers have assembled forensic evidence that suggests as many as six galaxies were torn to pieces inside the  Abell 2744 cluster over a stretch of 6 billion years. read more

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