After another near miss, professor wants to find asteroids that threaten Earth
Tuesday, March 12, 2013 - 09:31
in Earth & Climate
(Phys.org) —On Saturday, an asteroid the size of one and a half football fields flew within 240,000 miles of Earth. If the space rock had hit land, it would have leveled an area the size of San Francisco Bay. If it had hit the Pacific Ocean, the impact would have sent a tsunami to every facing shore.