I had missed that Ceres' gravity is due to its spin.
Does that mean humans are living upside down in their tunnels compared to Earth?
And if that's the case, surely a spin that's greater than the local gravity should shatter the planet itself as the matter has no reason to stay concentrated around its core right?
No. The fact that Ceres is a sphere implies that its scale is large enough for its material to behave as if it were a fluid and so reach hydrostatic equilibrium. Without serious engineering it would indeed come apart if you spun it up.
I vaguely remember something about Tycho Corporation wrapping cables around it and making it stronger, but maybe I'm confusing that with a Scott Manley video about Ceres in the Expanse.
But yes, walking feet towards the surface of Ceres, head to the core. The core is also where the poor people live in The Expanse, because the gravity is less/worse there together with weird Coriolis effects like this https://www.youtube.com/watch?v=ryrGPjyKhO4
Does that mean humans are living upside down in their tunnels compared to Earth?
And if that's the case, surely a spin that's greater than the local gravity should shatter the planet itself as the matter has no reason to stay concentrated around its core right?
Am I missing something?