Chelyabinsk a decade on: spotting invisible asteroids 'from the Sun'?
Paris (ESA) Feb 16, 2023
No one saw the Chelyabinsk meteor of 15 February 2013 coming - the largest asteroid to strike Earth in over a century. Just after sunrise on a sunny winter's day, a 20-metre, 13 000 tonne asteroid struck the atmosphere over the Ural Mountains in Russia at a speed of more than 18 km/s. The relatively small rock exploded in the atmosphere at an altitude of 30 km, releasing about half a megat
