this post was submitted on 14 Apr 2024
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Science Memes

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submitted 10 months ago* (last edited 10 months ago) by [email protected] to c/[email protected]
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[–] Knock_Knock_Lemmy_In 1 points 10 months ago (1 children)

Did we? The inner core maybe, but there's definitely some liquid somewhere, cos of volcanoes.

It's not something that is currently predictable though. We don't have decent models for the magnetic field.

[–] [email protected] 1 points 10 months ago (1 children)

Well there's magma under the crust but the core is solid.

[–] Knock_Knock_Lemmy_In 1 points 10 months ago

The inner core is solid. The outer core is 2000km of liquid.

But the main point is that both of these layers could vary their spin, making long term predictions about the rotation of the crust inaccurate.