The reason we do not hear the sound of light traveling from one place to another is because light is an electromagnetic wave, whereas sound is a mechanical wave. These two types of waves propagate through different mediums and have distinct properties.
Sound waves require a physical medium, such as air, water, or solids, to travel. When an object vibrates or moves, it creates changes in pressure in the surrounding medium, which propagate as compressions and rarefactions. Our ears detect these pressure changes as sound.
On the other hand, light is an electromagnetic wave that does not require a medium to travel. It can propagate through a vacuum, such as empty space. Light is composed of oscillating electric and magnetic fields, which are perpendicular to each other and to the direction of propagation. These fields interact with charged particles, such as electrons, but they do not rely on a physical medium to propagate.
Since light does not rely on air or any other material to travel, there are no pressure changes or vibrations that our ears can detect as sound. Instead, light interacts with our eyes or other detectors capable of sensing electromagnetic radiation. When light reaches our eyes, it stimulates the photoreceptor cells, allowing us to perceive it as visual information.
In summary, sound waves require a physical medium for propagation and can be detected by our ears, while light waves are electromagnetic in nature and do not rely on a medium for propagation, which is why we do not hear the sound of light.