An ancient group of galaxies is the most massive ever found in the first few billion years of the universe, and may eventually grow into one of the largest clusters.
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An ancient group of galaxies is the most massive ever found in the first few billion years of the universe, and may eventually grow into one of the largest clusters.
from SPACE.com http://ift.tt/1RymaV7
via IFTTT
Telescopically 