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on NASA's perseverance Mars Rover we

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have not one but two microphones and

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these microphones are the very first

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instruments of their kind ever to go to

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Mars I'm Nina Lanza and I'm a scientist

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at Los Alamos National Laboratory hi I'm

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Justin Mackey an Imaging scientist at

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NASA's jet propulsion Laboratory

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one of the microphones is mounted on the

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Mast and moves around as we point the

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cameras the other microphone is mounted

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to the Rover body and it stays fixed

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onto the port side of the Rover the two

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microphones that we sent were commercial

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off-the-shelf items so these are things

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that you could just buy on the internet

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and we put these on our Rover it gives

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us a new dimension for which we can

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explore Mars and learn about the Martian

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environment first we can just learn

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about the Atmosphere by understanding

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how sound propagates through it but we

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can also listen to the sounds of Rover

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analyzes on rocks and learn about the

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rock material properties from that and

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finally we can also listen to The Sounds

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the Rover makes to understand better the

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state of health of our instruments

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there's a difference between Mars and

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sounds on earth have very rich harmonics

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you can hear multiple frequencies it

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gives a really nice depth to the sound

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on Mars the atmosphere attenuates a lot

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of those higher frequencies so you tend

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to hear the lower frequencies and it's a

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much more isolated sound a little more

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muted than the sounds we hear on Earth

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we put together a list of some of the

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sounds we've recorded on Mars to date so

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let's take a listen this is the sound of

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wind on Mars

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[Music]

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for the first time we can hear the wind

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blowing across the surface of Mars to go

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along with all of the images that we've

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acquired of dust devils and dust storms

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over the many years of exploration on

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the surface

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this is the sound of the Rover driving

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sound might be a little bit weird

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because because I'm like a regular

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driving sound but that's because the

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Rover's wheels are made of metal so this

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metal is rolling over rocks and sand and

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it makes this really clanky squeaky

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sound

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next we have the super cam laser zapping

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we've taken a lot of pictures of rocks

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that have been Zapped by the super cam

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the little marks in the rocks and for

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the first time we can hear these laser

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shots when it zaps the rock it actually

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makes a sound we can listen to that

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sound and learn something about the

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properties of the rock that we're

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analyzing

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this is one of my absolute favorite

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sounds this is the sound of a helicopter

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we used this sound to actually

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understand the propagation of sound in

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general through the Martian atmosphere

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and it turns out that we were totally

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wrong with our models the Martian

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atmosphere can propagate sound a lot

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further than we thought it could

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we've all seen these beautiful images

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that we get from from Mars but having

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sound to be able to add to those images

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it makes me feel like I'm almost right