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    The first AI Universe Sim is Fast and Accurate and its creators don’t know how it works

    June 27, 2019, Categories  Astronomy/Space

    A comparison of the accuracy of two models of the universe. The new model (left), dubbed D3M, is both faster and more accurate than an existing method (right) called second-order perturbation theory, or 2LPT. The colors represent the average displacement error in millions of light-years for each point in the grid relative to a high-accuracy (though much slower) model. S. He et al./Proceedings of the National Academy of Sciences 2019

    For the first time, astrophysicists have used artificial intelligence techniques to generate complex 3D simulations of the universe. The results are so fast, accurate and robust that even the creators aren’t sure how it all works...

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