The moon's Schrödinger impact basin near the south pole holds two grand canyons formed by an enormous asteroid collision 3.8 billion years ago. Unlike Earth's, these canyons formed in less than 10 ...
About the canyons: The two canyons, called Vallis Schrödinger and Vallis Planck, are located on the far side of the moon, so they can only be seen from orbit — not from Earth. Each canyon is over 165 ...