Ancient Asteroid Breakup 800M Years Ago May Have Bombarded Inner Solar System

Eight hundred million years ago, a single asteroid shattered near Jupiter's gravitational threshold and set in motion a bombardment of the inner solar system that would persist for 150 million years — longer than the entire reign of the dinosaurs. Scientists have now reconstructed this ancient cascade of impacts, tracing the scars left on Earth, Mars, and the Moon back to one catastrophic origin point. The discovery is not merely a lesson in deep time; it is a reminder that the forces capable of reshaping worlds are not relics of the past, but ongoing features of the solar system we inhabit.