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Are there earthquakes on other planets?

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We Asked a NASA Scientist.

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Yes, definitely.

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But on other worlds, these aren't called earthquakes.

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They're called moonquakes or marsquakes

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if they're on the Moon and Mars.

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We know that these exist

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because we actually sent seismometers
to the Moon and to Mars.

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And when we sent seismometers to these worlds,

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we actually found thousands of quakes underneath the surface.

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Even when we don't have seismometers on other planets,

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we can actually tell that some worlds have earthquakes

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or had earthquakes in the past because there are cracks at the surface.

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And so when we see cracked rocks or even cracked ice on places

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like Europa and Enceladus, we know for a fact

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that there were quakes there to generate those cracks.

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Quakes of all sizes are really interesting and they can tell us a lot

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about the inside of a planet.

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Bigger earthquakes, bigger marsquakes
and bigger moonquakes can tell us

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about really deep processes and features on these planets.

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Now, recently, we've discovered that the Moon also has

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a small liquid core surrounding its solid core.

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And we've also discovered, thanks to NASA InSight, that the

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Mars core is actually larger than we initially thought,

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which means it's actually less dense,

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which is a really interesting science puzzle.

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So understanding the interior of other worlds will help us

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understand how our own world, the Earth, evolved.

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So are there earthquakes on other planets?

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Definitely.

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Moonquakes, marsquakes and possibly
one day we'll be able to send seismometers

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elsewhere to record europaquakes and enceladusquakes and beyond.

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We asked a NASA scientist.