How loud is it when a plane breaks the sound barrier?
A sonic boom is the noise created by an aircraft or some other object when it surpasses the speed of sound. Typically clocking in at 110 decibels, sonic booms are indeed about as loud as thunder or an explosion.
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Fifty years ago, the federal government banned all civilian supersonic flights over land. The rule prohibits non-military aircraft from flying faster than sound so their resulting sonic booms won't startle the public below or concern them about potential property damage.