Giant asteroid tracked by NASA to fly by Earth this week

Washington: NASA is tracking a giant asteroid which may be taller than the Empire State Building in the US, and it will be flying near the Earth on June 6 (Saturday).

Given the name rock 163348 (2002 NN4), the space rock is believed to be travelling at a speed of 5.2 km a second or 11,200 miles per hour and will pass by near...