How Can Stars Quake Without Tectonic Plates? (And Other Seismic Mysteries) | Compilation

Astronomers have seen quakes or volcanos on many celestial bodies that don't have tectonic plates like Earth does. So let's take a look around the solar system and see how various seismic features happen.

Hosted by: Hank Green (he/him)

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Original Episodes:
Why We Want to Find Plate Tectonics in Space
The First-Ever Map of Mars’s Interior
Moonquakes and Marsquakes
Starquakes Could Be Behind 3 Cosmic Mysteries
Io's Underground Magma Ocean
The First Time We Saw All of Venus: The Magellan Mission

Images:

[steveperks]

What did the first tectonic plate say to the other tectonic plate?

"That last earthquake was not my fault."

[NewMessage]

Hunh... These theories aren't as shaky as I thought they'd be.

[gmsherry]

I realize this problem may be inherent in any compilation where the segments are arranged thematically instead of chronologically. Still, I found it confusing when, around 8:50, Hank told me about the Insight Lander's seismometer, and 5 minutes later, at 13:50, Reid told me that the Viking Landers had the only seismometers on Mars. I think the latter segment was included for its information on moonquakes and the editor overlooked that it had information on Marsquakes that the earlier segment made outdated. I don't think Hank's intro warned us about that or tried to explain it. The result is not optimal.

[NiravJoshi]

I enjoyed this video a lot. Gave many answers to my thinking brain. Thanks sci show space

[buhbird]

Quaking rocky bodies is a a great band name

[FloozieOne]

This was a great episode. It talked about stuff I have always wondered about, and some things I never considered. I happen to be very fond of neutron stars and that segment had me cheering for the anomalies in them that continue to make them mysterious. Some day we will build a spacecraft that can withstand Venus' hellish atmosphere and solve the questions it continues to present us with. Space is awesome, scary and fascinating so please keep posting on this channel to keep my brain rotating with new ideas.

[lukasbaumgartner]

"but it's a start!"

Actually made me lol

[josephdonais]

...and in a hundred thousand years the alien will say, "I am not on Earth, nor in orbit". when finally, the sat signal arrives.

[mathieuleader]

maybe a quake like this caused the mystery energy blast this week

[Aztesticals]

Also could you put a little more into making sure that Comp info isn't confusing or contradicting earlier info. There was confusing stuff on viking

[thomasnaas]

"...must be jelly, cause jam don't shake like that!"

[wheelsmcdealsace]

Trip adviser say this is the best place to be in the whole vers.

[dorianboone]

You guys mentioned not having a lot of Mars quake data. The Mars InSight mission has returned a lot of data regarding quakes on Mars over the past four years.

[maliceflare]

12:26 sorry was eating, and i thought 'Mooncakes' and 'Mars cakes' heh...

[VGAstudent]

Has there been any physics simulations that can calculate how long an impact may cause plate tectonics to shift? Thea collided with primordial earth and that will definitely shake up the crust formation of ANY planet.

[Darkmattermonkey]

I never actually thought about gravity waves in that light. If a stars mass is unchanged and the collapse or supernova is crushing and expelling the matter that was already present, why is it creating gravitational ripples? Just a question to no one in particular.

[FunnCubes]

19:30 I know what he means, but he said it wrong. The rotational axis always goes through the center of mass, if there isn't any outside force. What he means is they spin faster if the mass distribution gets denser.

[klaus]

“well, we have an answer” – Youtube: Have some beer ads.

[atee]

Flagging this video as needing (not just auto-generated) subtitles. Please help us hard of hearing and deaf folks access your content!! 🥰🤟🏻

[SkywalkerAni]

21:27 The Stars may have faults, but Pizza does not.