Space.com - 6/15/13, Mike Wall
A big asteroid that flew past Earth last month belongs to a new category of space rock, scientists say.
Asteroid 1998 QE2 and its moon sailed within 3.6 million miles (5.8 million kilometers) of Earth on May 31, making their closest approach to our planet for at least the next two centuries. New radar images captured by the Arecibo Observatory in Puerto Rico are revealing just how unique this binary asteroid is, researchers say.
For more information please see Space.com
