Does sound, like light, have a maximum speed?

WHEN IT COMES to cosmic speed limits, light gets all the attention. Its velocity in a vacuum, a tad below 300m metres per second, is an absolute upper bound on how fast anything in the universe can travel. This value, called “” by physicists, is somehow baked into the fabric of reality as what is known as a fundamental constant.The speed of sound, by contrast, has no obvious upper limit of its own. Find the right material, it has always been assumed, and you could make sound travel arbitrarily fast—so long as you did not break the speed of light.