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Astronomers trace galaxy flows across 700 million light years

Everything in our universe moves, but the timescales needed to see motion are often vastly greater than human lifetimes. In a major new study, a team of astronomers from the University of Hawaiʻi Institute for Astronomy (IfA), University of Maryland and University of Paris-Saclay has traced the movement of 10,000 galaxies and clusters of galaxies, the dominant congregations of matter, within 350 million light-years. Their motions are followed throughout a span of 11.5 billion years––from the galaxies’ origins when the universe was only 1.5 billion-years-old, until today, at an age of more than 13 billion years.
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