1200x600-(1).jpgThe asteroid, which could be as small as a bus or as big as a house, will buzz Earth at a very safe distance of 23,900 miles today (Sept. 7).

A tiny asteroid is to make a very close approach with Earth today (Sept. 7), zooming harmlessly by at a distance of only 23,900 miles (38,500 kilometers) -- around 10 times closer to Earth than the moon.