Five years ago today, a small, previously unknown asteroid entered Earth’s atmosphere at 66 000 km/h and exploded high above Chelyabinsk, Russia, with 20–30 times the energy of the Hiroshima atomic bomb.
Five years ago today, a small, previously unknown asteroid entered Earth’s atmosphere at 66 000 km/h and exploded high above Chelyabinsk, Russia, with 20–30 times the energy of the Hiroshima atomic bomb.