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The Moon Is Older Than First Thought


The Moon Is Older Than First Thought
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The moon, formed when a rock the size of Mars hit the Earth, was thought to be 4.3 billion years old. It’s actually older, say scientists at University of California, Los Angeles, who studied moon rocks retrieved by U.S. astronauts. It’s at least 4.51 billion years old, they say, which explains how

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