Support WBURThe moon's grand canyons were carved in the blink of an eyePlay02:28Download AudioNell GreenfieldboyceFebruary 04, 2025 ShareTwo grand canyons on the moon radiating from the Schrödinger impact basin, from a view that looks obliquely across the lunar surface, like an astronaut in an approaching spacecraft. (Ernie T. Wright/NASA/SVS)