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I've Heard That The Earth's Rotation Is Slowing. How Long Until Days Last 25 Hours?
By Paul Adams Posted on 9.30.2008 8 CommentsWe could all use an extra hour in the day, but clocks won't need to be extended anytime soon. The time the Earth takes to make a complete rotation on its axis varies by about a millionth of a second per day, says physicist Tom O'Brian of the National Institute of Standards and Technology. While some days are shorter than average, the planet's rotation shows a long-term slowing trend, ultimately leading to a longer day.
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