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A new analysis of that sample detected zircon crystals and dated them to 4.46 billion years old. Previous estimates put the moon, formed by a massive celestial collision, at 4.425 billion years old. ....
New analysis of Apollo 17 zircon crystals shows the moon's formation was 40 million years earlier than thought, suggesting even greater age. Read the article for more details. ....
The new atom-by-atom analysis of a 4.46 billion-year-old lunar crystal pushes back the timeline for when the molten moon solidified by 40 million years, according to the study published in the journal Geochemical Perspectives Letters. ....