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New Clues to ­niverse's Structure Revealed

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Map of dark matter

Map of dark matter made from gravitational lensing measurements of 26 million galaxies in the Dark Energy Survey.

Credit: Chihway Chang/Kavli Institute for Cosmological Physics at the University of Chicago/DES Collaboration

What is our universe made of, and has its composition changed over time?

From Jet Propulsion Laboratory/NASA
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