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Supermassive black hole puts Einstein’s theory to the test

Lasers from the two Keck Telescopes propagated in the direction of the Galactic center

Hawaii’s Keck telescopes pierce the sky with lasers that help to correct for atmospheric blurring. A new analysis of data from Keck and other observatories lends credence to general relativity. Credit: Ethan Tweedie

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Nature 572, 8 (2019)




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