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The 2013 Chelyabinsk meteor event is the only known such incident in modern times to result in a large number of injuries, excluding the 1490 Ch'ing-yang event in China. The Chelyabinsk meteor is the largest recorded object to have encountered the Earth since the Tunguska event. The Comet ShoemakerâLevy 9 impact provided the first direct observation of an extraterrestrial collision of Solar System objects, when the comet broke apart and collided with Jupiter in July 1994.
2:18PM GMT 23 Mar 2015. Scientists have discovered two deep scars in the earth's crust in outback Australia that are believed to mark the remains of a meteorite crater with a 250-mile diameter â the largest ever found.