In the spring of 2024, the moon received a visitor — a rock or comet the size of a city building — and the scar it left behind went unnoticed for months until a patient researcher scanning orbital images recognized the unmistakable signature of a fresh wound. NASA has since named the 222-meter crater McGetchin, confirming it as the largest newly formed crater ever identified anywhere in the solar system. That such an event occurs perhaps once a century, and that we happened to catch it so soon after its birth, speaks to both the rarity of cosmic violence at this scale and the quiet, persistent