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Einstein Is Right About General Relativity — Again

    Physicists looked at gobs of data on planetary orbits to look for tiny anomalies that couldn’t be explained by either Isaac Newton’s theory of gravity — in which gravity is a force between objects that depends on their masses — or Einstein’s general relativity theory, which says gravity is a warping of space-time itself.

    Sorry, Einstein. Quantum Study Suggests ‘Spooky Action’ Is Real.

      In a landmark study, scientists at Delft University of Technology in the Netherlands reported that they had conducted an experiment that they say proved one of the most fundamental claims of quantum theory — that objects separated by great distance can instantaneously affect each other’s behavior.

      Symmetry gets a new look

        Symmetry has launched a brand new magazine. We’ve simplified and updated our webpages to help you find what you’re looking for, to guide your attention to our best art and photography, and to give you a better reading experience.

        The birth of a black hole, live

        Deep in the dense core of a black hole, protons and electrons are squeezed together to form neutrons, sending ghostly particles called neutrinos streaming out. Matter falls inward. In the textbook case, matter rebounds and erupts, leaving a neutron star. But sometimes, the supernova fails, and there’s no explosion; instead, a black hole is born. Scientists hope to use neutrino experiments to watch a black hole form.