CNNのインスタグラム(cnn) - 7月20日 05時27分

The moon 🌕 is actually about 85 million years younger than we thought, according to a study published this month. Until recently, it was assumed that the moon had accompanied the Earth for over 4.5 billion years. Scientists from the German Aerospace Center calculated how long it took the moon's magma ocean—it's a widely held belief that the lunar surface was once molten—to cool, and the moon, they say, was actually born at the tail-end of the Earth's formation. "This is the first time that the age of the Moon can be directly linked to an event that occurred at the very end of the Earth's formation, namely the formation of the core," said Thorsten Kleine, study co-author from the Institute of Planetology at the University of Münster in Germany. (📸:NASA/SVS)

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