WOW that's amaaaaaaaaaaaaazing. It makes it all worthwhile. And straight from the horse's mouth via The Guardian, so who can argue with that? Not moi. "“Capturing this audio was an unplanned treat,” said Bruce Banerdt, the InSight principal investigator at Nasa’s lab in Pasadena, California. “But one of the things our mission is dedicated to is measuring motion on Mars and naturally that includes motion caused by sound waves.” https://www.theguardian.com/science/2018/dec/07/sounds-of-mars-wind-captured-by-nasas-insight-lander 'an unplanned treat'? Anything to big it up.