A lot of people may not know if there is actually sound in space or not. But among those in the know, it is a common belief that there is no sound in space. While this is true to the extent that it's unrealistic to hear all the sounds during a space battle you see in movies or on television, it is not quite true in the most strictest of senses. There is gas in space, albeit at such low densities and pressures that it would be essentially the same as a vacuum to life forms such as us, who are used to comparatively high-pressure atmospheres. And where there is gas, there can be sound.