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Braking news: Disks slow down stars

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8:40am, August 9, 2006

Left to their own devices, young stars would twirl so fast that they'd fly apart. Astronomers have long suspected that the planet-forming disks of gas and dust that surround many newborn stars put the brakes on these whirling dervishes. Now, researchers have the first clear-cut evidence that the young stars' rotations are indeed slowed by their disks.

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