More than 15,000 threat-posing asteroids found: ESA
The number of near-Earth objects (NEO) that pose a threat of crashing into the Earth has crossed 15,000, with many more yet to be identified, European Space Agency (ESA) astronomers have said. Around 90% objects larger than 1000 m have been discovered, but only 10% of 100 m NEOs, and less than 1% of 40 m ones have been found.