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This is Scientific American's 60-second science.

I'm Christopher in Taliatta.

Just like here on Earth we have earthquakes, the planet Mars has Marsquakes.

Although the quakes that we see on Mars are actually more similar to the kinds of things you see in the middle of plates on the Earth, what we call intra-plate earthquakes.

And so something that might happen in Montana or

South Carolina, for example. Bruce Banner, a planetary geophysicist at the Jet Propulsion Lab in California.

He explains that as the hot center of the planet cools, it's slowly shrinking. So the frozen outer layers,

basically, after a while, they're too big for the rest of

the globe, and they have to kind of crinkle to kind of stay contiguous on a shrinking ball.

And that crinkling causes quakes. NASA's Insight mission, which landed on the red planet about a

year ago, placed a seismometer on the planet's surface to listen for quakes, and it's captured

signals from more than a hundred, some large enough that you'd feel them if you were standing

nearby, like this magnitude 3.7 recorded back in May.

Just to note that it's been sped up to be audible, and you really need headphones to hear

the ferocious rumbling.

We use these signals from the Marsquakes, actually to probe the deep interior of Mars.

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