Sound is a mechanical wave that requires a medium, such as air, water, or solid objects, to propagate. When an object vibrates or creates a disturbance, it causes the surrounding particles of the medium to vibrate, transmitting the sound energy from one particle to another.
In the vacuum of space, there is no air or any other medium to carry sound waves. Therefore, sound cannot propagate in the absence of a medium. Since space is mostly empty, with extremely low densities of particles, sound waves cannot travel through space as there are not enough particles to transmit the vibrations.
However, it's worth noting that space is not completely silent. There are other forms of electromagnetic radiation, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, which can travel through the vacuum of space. These forms of radiation differ from sound waves in that they do not require a medium and can propagate through the vacuum of space at the speed of light.