In the quiet discipline of comparing lunar photographs, a single bright anomaly on the moon's eastern edge led scientist Robert Wagner to a discovery that reframes our understanding of cosmic time: the largest newly formed crater in the solar system, born between April and May of 2024. Named McGetchin Crater in honor of a pioneering lunar scientist, the 728-foot-wide, 141-foot-deep scar is a reminder that the universe continues to reshape the worlds around us, often without witness — until someone stops and looks closely enough.