Chinese researchers plan to fire more than 20 of the nation's largest rockets into space in hopes to potentially divert 'doomsday asteroids' that could impose massive destruction and end life on Earth. The 23 Long March 5 rockets that weighs 992 tons (900 metric tons) are expected to deflect the 85.5-million-ton (77.5 million metric ton) asteroid Bennu. The space rock which is the size of the Empire State Building could hit Earth in 1 out of 2,700 chances, but would leave behind a historic catastrophic event. The asteroid impact - 1,200 megatons of kinetic energy - could hit Earth with an collision that is roughly 80,000 times greater than the energy of the bomb dropped on Hiroshima, and as destructive as the 100-million-megaton space rock that wiped out the dinosaurs some 65 million years ago.