Massive lunar canyons formed within minutes, most likely due to asteroid strike
Two canyons on the far side of the moon, each as large as Earth's Grand Canyon, formed within less than 10 minutes, most likely due to a massive impact there 3.8bn years ago. The object and its work are the subjects of scientific speculation in the journal Nature Communications.
About 3.8 billion years ago, two massive canyons li…
