> In the early days of space missions it was observed that spinning objects flip over spontaneously. [...] Any solid object spinning in three dimensions will do

> In the early days of space missions it was observed that spinning objects flip over spontaneously. [...] Any solid object spinning in three dimensions will do this [...] Since then you might assume that this possibility was debunked. That didn’t happen. That phenomenon depends on a particular arrangement of axes and mass, it does not happen to all shapes, and there's no reason to believe Earth is super-weird-enough under the surface in a way which we've never detected in gravity surveys. https://en.wikipedia.org/wiki/Tennis_racket_theorem https://en.wikipedia.org/wiki/Tennis_racket_theorem Rather, this submission sounds more like a variation on: https://en.wikipedia.org/wiki/Cataclysmic_pole_shift_hypothesis https://en.wikipedia.org/wiki/Cataclysmic_pole_shift_hypothe...