Asteroid YR4 spares Earth, 1.7 percent impact peril to moon
Scientists worldwide had dubbed asteroid YR 4 as a ‘city killer’ due to its estimated size that ranged between 40 meters and ...
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Asteroid with chance to hit Earth downgraded to level zero threat
YR4 was recently upgraded to a level three threat on the Torino Impact Hazard Scale, but its chances of impact are now nearly ...