Mercury is still shrinking after billions of years, and scientists can see its 'wrinkles'
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Mercury is reported to still be shrinking, a process that has been ongoing for billions of years. The extent of the shrinkage is uncertain, with some outlets suggesting the planet's radius has decreased by up to 11 kilometers since its formation. Scientists are able to observe the effects of this shrinkage on the planet's surface, which has resulted in visible "wrinkles".
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