Sound travels much slower on Mars than on Earth, researchers find

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Researchers studying recordings made by microphones on NASA's Perseverance rover found that sound travels much slower on Mars than it does on Earth.

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In a study published in Nature on Friday, the team said it looked at recordings dating back to February 19, 2021, the day after the rover arrived on the planet.

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Using recorded sounds generated by the rover — like shock waves from the rover's laser that was used to cut rocks,

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, and flight sounds from the Ingenuity helicopter — the researchers were able to compare the Martian sounds to Earth sounds.

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They determined that sound travels 100 meters per second slower on Mars than on Earth.

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In addition, the researchers realized that there are two speeds of sound on Mars — one for high-pitched sounds and one for low-pitched sounds.

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