The Late Heavy Bombardment, or lunar cataclysm, is a hypothesized astronomical event thought to have occurred approximately 4.1 to 3.8 billion years ago, during which a disproportionately large number of asteroids and comets are thought to have collided with the terrestrial planets and their moons in the inner Solar System.
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Late Heavy Bombardment (Wikipedia)
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The Late Heavy Bombardment (LHB), or lunar cataclysm, is a hypothesized astronomical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, at a time corresponding to the Neohadean and Eoarchean eras on Earth.
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