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Gravity Tug

Asteroid Defense, Or How to Stop a Species Killer

John Geoghegan | Posted 11.06.2012 | Weird News
John Geoghegan

Apophis' chief claim to fame is that it briefly achieved the highest level ever measured on the Torino Impact Hazard Scale before it was downgraded. Nevertheless, it still has a one in 250,000 chance of hitting Earth on its second visit.