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Cosmology

Cosmology

First stars and galaxies are not as old as we thought, say Planck astronomers

06 Sep 2016
Artist's impression of the first stars and galaxies as they reionized the universe
A long time ago: artist's impression of the universe 700 million years after the Big Bang. (Courtesy: ESA/Wolfram Freudling)
  The dark ages of the universe were nearing their end 700 million years after the Big Bang, w

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Keith Cooper is a science writer based in the UK
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