25 hour days?

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25 hour days?

Post by GrannyGrottbags » Wed Dec 07, 2016 11:37 am

Earth heading for 25-hour day as orbit slows
Scientists compare celestial events from 720BC to 2015 to work out how long before we have an extra hour in the day.
Days on Earth are getting longer, a team of experts has concluded, as they predict in the future there will be 25 hours in a day.
Over the past 27 centuries, the average day has lengthened at a rate of almost two milliseconds (ms) per century.
However, it will take about 6.7 million years to gain just one minute extra per day and we will have to wait about 200 million years for the extra hour.
Study lead co-author Leslie Morrison said: "It's a very slow process."
Researchers at Durham University and the UK's Nautical Almanac Office gathered evidence from historical accounts of eclipses and celestial events from 720BC to 2015.
More: http://news.sky.com/story/earth-heading ... s-10686310
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