By Walt Hickey Rovers, driving in the Jezero, oh man, look at those sound waves go The Perseverance rover on Mars has a microphone, which made it the first robot to send back the sounds of another world. This naturally got scientists interested in how fast that sound was going, and researchers have now clocked the speed of sound on Mars. The speed of sound is determined by a lot of things, like atmospheric composition and temperature and the like, so it’s going to be different there than it is here. They did it by finding how long it took a sound to hit the microphone, specifically the sounds of a laser blast used by
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