Asteroid WARNING: US Defence Secretary warns DEVASTATING impact ‘could be TOMORROW’
On February 15, 2013, a small undetected asteroid measuring only about 65.6ft (20m) in diameter flew over Chelyabinsk Oblast, Russia.
The small asteroid exploded in the air with 30-times the force of the Hiroshima nuclear bomb dropped in 1945.
The resulting airblast damaged more than 7,000 buildings in the region and more than 1,000 people suffered injuries from blown out windows.
Mr Cohen said: “If it can do that damage, imagine what something a mile-wide or two miles-wide can do.”
READ MORE: Watch major asteroid DESTROY Earth in fiery crash simulation