Bright ancient galaxies offer rare glimpse of early universe

Four galaxies examined by the Hubble telescope date to a mere 500 million years after the big bang, but are so bright they offer scientists a new window into that early stage of the universe. A quartet of galaxies spied with NASA's Hubble Space Telescope are among the oldest yet discovered — more than 13 billion years old, born just 500 million years after the big bang. They're also incredibly bright, so luminous that they offer a new peek into the early universe.

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