Pluto is probably the thinnest bound atmosphere that we know, but it also looks really complex. Because the temperature is so low, nitrogen is an ice, carbon manoxide is mostly in ice. That's probably the weirdest, most different kind of place in terms of thinking about how composition, temperature, pressure would affect the sound. There's one more world worth a listen - not a planet, but a moon. Saturn's titan,. is the only one we know of with a true atmosphere. In two thousand five the hoygen space probe recorded audio as it descended through the thick atmosphere to the surface. If you were standing on its surface, the soundscape might be e