Decatur Daily2 天
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 of years ago, it carved out a pair of grand canyons ...
Why it’s good for NASA that an asteroid carved out 2 grand canyons on the moon
New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons ...