Today I saw and heard something quite remarkable. A clip of the Ingenuity helicopter flight on Mars. Only this time they opened up a sound mic to it and you get to hear not only the deep humming of the little chopper, but an eerie sound of Martian Wind blowing over stark desolation !! Given the Martian atmosphere is just a few percent of the density of Earth's, you'd be forgiven for thinking sounds would be little or nothing. Apparently not so. The sound of wind blowing on another world !!!! Strangely disturbing, yet cryogenically cool.