It is less than a decade since residents of Chebarkul, a city in Chelyabinsk oblast, Russia, witnessed the explosion in the atmosphere of a meteorite reckoned to have been a mere 20 metres across.

离俄罗斯，车里雅宾斯克州切巴尔库尔市的民目睹一颗直径只有 20 米的陨石在大气层中不到十年。