How long is a day? 24 hours? 86,400 seconds? The answer is no two days are ever the same. A day is defined by how long it takes Earth to complete one rotation on its axis and many factors affect the speed of our spin. The gravitational influence of the Moon has dragged on the day, lengthening it from just under 19 hours 1.4 billion years ago to the
WHAT'S HAPPENING TO ITS SPIN?
Jun 08, 2023
2 minutes
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