The universe might be younger than we thought, galaxies' mot

We think the universe is 13.8 billion years old, but could we be wrong? A new study of bound galaxies offers an unexplored clue.

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China , Chinese , Guo Qi , Sloan Digital Sky Survey , European Space Agency Planck , European Space Agency , Standard Model , National Astronomical Observatories , Chinese Academy , Local Group , Millennium Simulation ,