Sound cannot travel through space due to the vacuum, but NASA's Mars rover did carry a microphone that recorded sound on Mars. This microphone is notable as it is the first and only one used in space, aside from those used by astronauts in controlled environments. Currently, there are no publicly available recordings from this microphone. The discussion highlights the unique capability of the rover to capture sound in an extraterrestrial environment. Overall, sound has been recorded on another planet, but access to those recordings remains limited.