If an asteroid the size of YR4 were to hit our planet, it would not end life on Earth, but it would be devastating. At that size, the impact would be equivalent to a “10-megaton bomb,” Tonry ...
That’s why this one now tops ESA’s asteroid risk list. The potential impact would occur on Dec. 22, 2032. It’s much too soon to know where it might land if it did hit Earth. The good news ...