article: Impact event
links: Impact crater National Space Science Data Center Earth Chicxulub impact Moon The New York Times Formation and evolution of the Solar System Outer space Asteroid impact prediction The Economist Evaporation Siberia Comet Shoemaker–Levy 9 Mars Cretaceous–Paleogene extinction event Near-Earth asteroid Chelyabinsk meteor Jupiter Tunguska event Giant impact hypothesis Near-Earth object Explosion Solar System Late Heavy Bombardment