Adam Riess is a 2011 Nobel Laureate in Physics, a Professor of Astronomy and Physics at the Johns Hopkins University, and a Senior member of the Science Staff at the Space Telescope Science Institute in Baltimore, Maryland.
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17:10
One Constant, Two Answers
Astronomers are trying to figure out how fast the universe is expanding. But two approaches are giving different answers.
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Ask an Astrophysicist
Nobel Prize-winning astrophysicist Adam Riess takes your questions on dark energy and the cosmos.
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Adam Riess: One Cosmic Puzzle Solved, Many To Go
Nobel Prize-winning astrophysicist Adam Riess discusses the mysterious force known as dark energy.