The moon is lengthening Earth’s day - A new study that reconstructs the deep history of our planet’s relationship to the moon shows that 1.4 billion years ago, a day on Earth lasted just over 18 hours, at least in part because the moon was closer and changed the way the Earth spun around its axis.

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The moon is lengthening Earth’s day - A new study that reconstructs the deep history of our planet’s relationship to the moon shows that 1.4 billion years ago, a day on Earth lasted just over 18 hours, at least in part because the moon was closer and changed the way the Earth spun around its axis.