kimberlite pipes

impact crater, asteroids, meteors, meteorites, lunar craters, Lunar Reconnaissance Orbiter, NASA LRO, dinosaurs, extinction event, mass extinction, Mount Everest, Permian Triassic extinction event, Solar System, Moon, 'Oumuamua, kimberlite pipes, Yarkovsky effect, inner asteroid belt,

Long Ago, the Number of Meteors Hitting Earth Spiked Suddenly – and Didn’t Stop