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News From the Field

ALMA finds best evidence yet for galactic merger in distant protocluster


November 10, 2014

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Nestled among a triplet of young galaxies more than 12.5 billion light-years away is a cosmic powerhouse: A galaxy that is producing stars nearly 1,000 times faster than our own Milky Way. This energetic starburst galaxy, known as AzTEC-3, together with its gang of calmer galaxies may represent the best evidence yet that large galaxies grow from the merger of smaller ones in the early universe, a process known as hierarchical merging.Full Story

Source
National Radio Astronomy Observatory

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