The space rock will fly within 162,252 miles (261,119 km) of Earth on Jan. 25, 2017. It is estimated to be about 30 feet in diameter. Slooh.com astronomer Eric Edelman explains.
The space rock will fly within 162,252 miles (261,119 km) of Earth on Jan. 25, 2017. It is estimated to be about 30 feet in diameter. Slooh.com astronomer Eric Edelman explains.