AN asteroid comparable to the one which wiped out the dinosaurs WILL hit Earth and it could wipe out humanity when it does, a physicist has warned. By  SEAN MARTIN 14:45, Sun, Dec 22, 2019   | UPDATED:  14:51, Sun, Dec 22, 2019 Asteroid will one day 'collide' with Earth says expert Play Video Player Information About Brightcove The  asteroid  which wiped out the dinosaurs around 66 million years ago was believed to be up to 10 miles wide. While asteroids of that size hitting Earth are extremely rare, another major collision is inevitable. NASA has made great strides in discovering near-Earth objects that are over one kilometre in size, with 90 percent now accounted for. his rate, NASA predicts 2019 YU will approach Earth around 8.14pm GMT (3.14pm EST). The news comes just five days after NASA’s trackin...