The first asteroid to be detected and tracked in this way was a 13-foot-wide (4-meter-wide) space rock called 2008 TC3, which broke up above Sudan in October 2008. But the system

The European Space Agency said that the asteroid, which was about 27.5 inches wide, was seen burning up across the sky on Dec. 3

Astronomers spotted a 70-centimetre asteroid hours before it hit the atmosphere above northern Siberia, making a fireball in the sky