Cosmic Sound Comparison What Would Space Sound Like?! Space is silent to human ears but the universe still creates powerful vibrations and signals. The Sun giant Cosmic Sound Comparison What Would Space Sound Like?! Space is silent to human ears but the universe still creates powerful vibrations and signals. The Sun giant Yes, outer space is completely silent because sound needs a medium, like air, water, or a solid surface, to travel. Sound waves are vibrations that move through particles, but in the vacuum Is There Sound in Space? This Week in NASA History: Space Shuttle Program's First Mated Vertical Ground Vibration Test Performed at Marshall Oct. 4, 1978 NASA