Sound requires a medium, such as air, water, or solids, to propagate. In the vacuum of outer space, where there is an absence of matter, sound cannot travel in the same way as it does on Earth. Therefore, sound cannot propagate through the vacuum of space. There are no particles to vibrate and transmit the sound waves.
In space, sound waves would simply not exist in the conventional sense. This is why astronauts in space missions cannot communicate by speaking directly to each other using sound waves. Instead, they rely on other methods of communication, such as radios or intercom systems, which use electromagnetic waves to transmit information.
Since sound requires a medium, preventing sound from escaping into space is not a concern. The vacuum of space acts as a natural barrier that sound cannot cross. Sound produced within a spacecraft or any other object in space would not escape into the universe because it cannot propagate through the vacuum.
It's worth noting that in science fiction movies or shows, sound is often portrayed in space for dramatic effect, even though it does not occur in reality. These artistic choices are made to enhance the viewer's experience rather than accurately represent the scientific reality of sound propagation in space.