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How an Asteroid Hit the Moon and Made Two 'Grand Canyons'
"Nearly four billion years ago an asteroid or comet flew over the lunar ... that carved two canyons that are the size of Earth's Grand Canyon. While the Grand Canyon took millions of years to ...
abc7NY1mon
Grand canyons on the moon? Asteroid strike billions of years ago carved out 2 massive gorges
New research shows that when an asteroid slammed into the moon billions ... digging out two canyons comparable in size to Arizona's Grand Canyon in barely 10 minutes. The latter, by comparison ...
WFMZ-TV1mon
How an ancient asteroid strike carved out 2 grand canyons on the moon
New research shows that when an asteroid slammed into the moon billions ... digging out two canyons comparable in size to Arizona's Grand Canyon in barely 10 minutes. The latter, by comparison ...