The length of a day on Earth may not be as fixed as we once believed. For centuries, we’ve lived by the 24-hour cycle, but recent research reveals that the planet’s rotation is gradually slowing down, ...
Our 24-hour day measures Earth’s rotation relative to the Sun, known as a solar day. This is slightly longer than Earth’s ...
A billion years ago, days lasted 19 hours: the balance between the oceans, the atmosphere, and the Moon slowed down the Earth ...
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