What was the largest asteroid to ever hit Earth?
Impact event
Throughout recorded history, hundreds of Earth impacts (and exploding bolides) have been reported, with some occurrences causing deaths, injuries, property damage, or other significant localised consequences.[3] One of the best-known recorded events in modern times was the Tunguska event, which occurred in Siberia, Russia, in 1908. 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 asteroid impact that caused Mistastin crater generated temperatures exceeding 2,370°C, the highest known to have occurred on the surface of the Earth.[4]
Impact event
Although no human is known to have been killed directly by an impact, over 1000 people were injured by the Chelyabinsk meteor airburst event over Russia in 2013.[23] In 2005 it was estimated that the chance of a single person born today dying due to an impact is around 1 in 200,000.[24] The four-meter-sized asteroids 2008 TC3, 2014 AA, 2018 LA, and suspected artificial satellite WT1190F are the only known objects to be detected before impacting the Earth.[25][26]