Stars may keep spinning fast, long into old age

The idea that older stars continually slow their rotation may be wrong

sunlike stars illustration

SLOWDOWN  Sunlike stars start as fast-spinning balls of gas (illustrated at left). As this type of star ages, its spin slows and it puffs up, before dying as a nebula (middle and right). But the spin of these aging stars might not slow as much as thought.

S. Steinhöfel/ESO

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