Sound cannot travel through the vacuum of outer space because it requires a medium, such as air, water, or a solid, to propagate. In the absence of a medium, like in the empty space between celestial bodies, sound waves cannot travel or propagate.
In space, the most abundant medium is the near-vacuum of interstellar space, which is extremely low-density and lacks sufficient particles to transmit sound waves. As a result, any sound produced in space, such as the noise generated by a spacecraft or astronaut, would not be able to travel to our ears or be detected by traditional sound recording equipment.
However, it's worth noting that sound waves can travel through different media, such as gases and liquids present in space. For example, sound can propagate through the thin atmosphere of planets, moons, or other celestial bodies, allowing for the transmission of sound within those environments.
As for preventing sound from escaping into the universe, it's not necessary since sound cannot travel through the vacuum of space. In the absence of a medium, there is no need to contain or prevent the escape of sound waves.