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Days on Earth are getting longer

Researchers at Columbia University and Wisconsin-Madison University have conducted a study that shows how much the duration of a day has changed in time. Thus, 1.4 billion years ago, one day on Earth was not 24 hours, but only 18 hours. At that time, the Moon was much closer to Earth, and its gravity was stronger, influencing the planet's rotation and its axis. Since the moon is steadily moving away from the Earth at about 3.82 cm per year, this...