No, sound cannot travel in a vacuum. Sound requires a medium (such as air, water, or solid materials) to propagate. It travels through the vibration of particles in these media. In a vacuum, where there are no particles to transmit the sound waves, sound cannot be heard or travel at all. This is why, for example, in space—where there is a near-perfect vacuum—astronauts cannot hear each other without the aid of radios.
Can sound work in a vacuum.
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