It regularly evades my memory whenever I see pictures from the Mars Curiosity rover that the ground and air around it are most likely as cold as the South Pole, and that due to the thin, CO2-rich atmosphere, all sound would be whisper quiet, so someone screaming at you on Mars from about 10 metres away would be barely audible. Also, due to the CO2, anyone you could hear would have deeper voices (the opposite effect of inhaling Helium).
Thankfully, this means anyone or anything that wasn’t within arm’s reach of the actual Curiosity rover could not hear that fucking Will.I.Am song.
Did you know the tire tracks left by curiosity form a kind of Morse code that spells out “JPL”. They also use the tracks for accurate distance checking when there are no landmarks.