I saw on a show a former astronaut explain the lack of sound in space by stating an obvious reason, the sun, there are massive explosions occurring all the time, that if there were sound transmitted through space, we'd be bombarded with intolerable noise.
Very interesting point! I have never considered that before. You learn something new every day. I find space fascinating, as I'm sure many people do. If only I was smarter, I would have gone into a related field for my career.