Day Time Increases As Earth Spinning Speed Slows Down Due To Moon

Longer days The earth and the moon

Writing in Proceedings of the National Academy of Sciences, Stephen Meyers at the University of Wisconsin-Madison and Alberto Malinverno at Columbia University in NY calculate that over the past 1.4bn years the moon has drifted about 44,000km from Earth to a distance of 384,400km.

So, while it is now estimated Earth will eventually get 25-hour days, for now, everyone can still plan their lives around the regular 24-hour cycle.

The researchers used a statistical method for the study, called astrochronology i.e. These variations ultimately determine where sunlight is distributed on Earth, based on the planet's rotation and tilt.

Milankovitch cycles describe the climate changes caused by the effect of the cyclical variation of the Earth's orbit caused by its gravitational interactions with other planets and objects in the Solar System.

Earth's climate rhythms are captured in the rock record, going back hundreds of millions of years. They discovered that moon is moving far from our planet at a rate of 3.82 centimeters a year.

Researchers from the University of Wisconsin-Madison have worked out that around 1.4 billion years ago, a day on Earth lasted 18 hours.

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If you've been grumpy about the days getting shorter as we approach June 21's winter solstice, think how much gloomier it would have been if we'd existed 1.4 billion years ago.

The researchers note that if you take the timeline back far enough, looking 1.5 billion years in the past, the Moon would have been close enough that Earth's gravity would have destroyed it. A group of scientists reconstructing the history of Earth using geological evidence has revealed the days on our planet have been getting longer. This study by Meyers led to a collaboration with Alberto Malinverno of Columbia University, notes the report. But this is just one piece of the somewhat puzzling relationship between the Earth and the Moon. Rock records dating more than a billion years old were available but the lack of geologic means to study them with precision as well as the uncertainty of celestial bodies in our solar system made things complicated.

Meyers and his team used astrochronology, or the statistical method that connects astronomical theories with geological observations, to reconstruct the solar system's ancient history. The moon is believed to be about 4.5 billion years old and is positioned at a distance of about 239000 miles away from Earth.

Prof Meyers and his team were able to reliably assess from a layer of rock in the geologic record variations in the direction of the axis of rotation of Earth and the shape of its orbit.

Many of us feel that the day has too few hours.

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