How an ancient asteroid strike carved out 2 grand canyons on the moon

Scientists estimate the asteroid that produced these canyons about 3.8 billion years ago was 15 miles across.

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Feb 4, 2025 - 15:33
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How an ancient asteroid strike carved out 2 grand canyons on the moon
Scientists estimate the asteroid that produced these canyons about 3.8 billion years ago was 15 miles across.
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