人类灭绝的10种可能 特朗普入围

Asteroid impact
小行星撞击

From time to time Asteroids cross paths with us and, while impacts on the scale of the infamous 6.2-mile (10km) 'dinosaur-destroyer' are rare, an asteroid a fifth the size could spell disaster for civilisation.
虽然小行星时不时就会与地球相交，但是“令恐龙灭绝”的声名狼藉的小行星直径有1万米，这种小行星非常罕见，一颗体积仅为其1/5的小行星就能给人类文明带来一场浩劫。

With energy greater than 10 million Hiroshima bombs, the impact shock would flatten everything within a 186-mile (300km) radius.
小行星撞击的能量比1000万枚投放在广岛的原子弹还要强，带来的冲击将把方圆300公里夷为平地。

However, the CESR rate this as a low risk priority.
然而，CESR认为这种情况的可能性较低。