Scientists found that an asteroid impact carved two massive canyons on the moon in minutes. High-speed debris helped shape ...
The Associated Press on MSN9d
How an ancient asteroid strike carved out 2 grand canyons on the moonNew research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...
The object that struck the moon is estimated to have been about 15 miles (25 km) in diameter, larger than the asteroid that struck Earth 66 million years ago and doomed the dinosaurs. "When the ...
Two immense canyons on the moon's far side that rival Earth's Grand ... "Nearly four billion years ago an asteroid or comet flew over the lunar south pole, brushed by the mountain summits of ...
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