Huge Asteroid Rushes Past Earth Weeks After 1,500 Hurt in Explosion Over Russia

Asteroid 2013 ET shoots about 600,000 miles from Earth on Saturday moving at speed of 26,000 mph; asteroid could have wiped out a large city with impact.

An asteroid as big as a city block shot relatively close by the Earth on Saturday, the latest in a series of visiting celestial objects including an asteroid the size of a bus that exploded over Russia last month, injuring 1,500.