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Nat Geo Live: NG Live!: Mapping the Unknown, Part 2: Adam Riess and the Expanding Universe

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      • © National Geographic

        NG Live!: Mapping the Unknown, Part 2: Adam Riess and the Expanding Universe

        Adam Riess received last year's Nobel Prize in physics for discovering the accelerating expansion of the universe, and discusses how this phenomenon is widely attributed to the elusive concept of dark energy.

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