Rare dark-streaked meteorites may come from a ‘potentially hazardous’ asteroid

Strange, dark-veined meteorites rained down on Earth when a fireball exploded over Chelyabinsk, Russia, in February 2013. The origin of these unusual meteorites has remained a mystery, but now, planetary scientists have discovered a possible source: a mile-and-a-half-long near-Earth asteroid.

Scientists know that the dark streaks across the Chelyabinsk meteorites are caused by a process called shock darkening. Yet only around 2% of a common type of meteorite called chondrite meteorites show signs of shock darkening, and the source of these space rocks has remained a mystery.

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