[TeMPOraL]

> Spinning up Ceres to provide internal gravity ...

Spinning a rock can be done over long periods of time. In The Expanse, it was a decades-long project, that earned the Tycho Corporation some serious engineering cred.

[lhopki01]

Spinning up asteroids can't be done. The speed you'd need for significant gravity would rip the asteroid apart.

[TeMPOraL]

[citation needed]