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Natalie Wolchover

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    Astronomers Get Their Wish, and a Cosmic Crisis Gets Worse

    We don’t know why the universe appears to be expanding faster than it should. New ultra-precise distance measurements have only intensified the problem.

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    Physicists Nail Down the ‘Magic Number’ That Shapes the Universe

    A team in Paris has made the most precise measurement yet of the fine-structure constant, killing hopes for a new force of nature.

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    Physics Nobel Awarded for Black Hole Breakthroughs

    Roger Penrose, Reinhard Genzel and Andrea Ghez were awarded the Nobel Prize in Physics for their studies of black holes.

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    How Gödel’s Proof Works

    His incompleteness theorems destroyed the search for a mathematical theory of everything. Nearly a century later, we’re still coming to grips with the consequences.

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    Dark Matter Experiment Finds Unexplained Signal

    Researchers say there are three possible explanations for the anomalous data. One is mundane. Two would revolutionize physics.

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    Why Gravity Is Not Like the Other Forces

    We asked four physicists why gravity stands out among the forces of nature. We got four different answers.

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    Neutrino Asymmetry Passes Critical Threshold

    The first official evidence of a key imbalance between neutrinos and antineutrinos provides one of the best clues for why the universe contains something rather than nothing.

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    To Make the Perfect Mirror, Physicists Confront the Mystery of Glass

    Sometimes a mirror that reflects 99.9999% of light isn’t good enough.

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    Axions Would Solve Another Major Problem in Physics

    In a new paper, physicists argue that hypothetical particles called axions could explain why the universe isn’t empty.

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    New Wrinkle Added to Cosmology’s Hubble Crisis

    Two independent measurements of the universe’s expansion give incompatible answers. Now a third method, advanced by an astronomy pioneer, appears to bridge the divide.