A correlation between stellar brightness variations and the gravitational acceleration at a star's surface has been observed that allows this acceleration to be measured with a precision of better than 25%. See Letter p.427
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Christensen-Dalsgaard, J. Twinkling stars. Nature 500, 405–406 (2013). https://doi.org/10.1038/500405a
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DOI: https://doi.org/10.1038/500405a
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