According to a study published in the journal Nature Geoscience, Earth once had just 19-hour-long days due to the presence of the Moon.
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Earth once had days that were only 19 hours long, a stark contrast to the current 24-hour cycle, which is the result of the planets rotation on its own axis.
During a period known as the “boring billion,” two geophysicists discovered that Earth experienced a slowdown in its rotation due to reduced tectonic activity and a delicate balance of gravitational forces.
In a study published in the journal Nature Geoscience, researchers noted that this stalling coincided with a time of limited biological evolution, hence the name “boring billion.”
The Moon played a significant role during this era, exerting a stronger gravitational pull due to its closer proximity to Earth. Over time, the Moon gradually siphoned off Earth’s rotational energy, propelling itself into a higher orbit.
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According to a study published on Monday in Nature Geoscience, the Earth’s core may be reversing direction on a regular cycle.