音爆云

U. S. Navy photographer with lightning-fast reflexes captured this image of a fighter plane blasting through a ´sonic boom cloud´ as the jet broke the sound barrier.

一位美国海军摄影师敏捷地捕捉到了战斗机在突破音障时，产生“音爆云”的图片。

Such “sonic boom clouds” can occur when aircraft fly fast enough to cool the air around them, causing moisture in the air to condense.

类似这样的“音爆云”会在飞行器达到足以将周围空气冷却的速度时出现，空气中的湿气最终被液化。