Toroidal Planets

Toroidal planets (synonyms: donut worlds; example toponyms: The Eye of the Cosmos, Homer’s World) are hypothetical rocky planets that are shaped like a toroid, or doughnut. While they have never been observed to actually exist theoretically they are quasi-stable. Of course, in fictional worlds or within your own worldbuilding they may be a much more common occurrence.
It is predicted that the tidal force of toroidal planets would force its’ tectonic plates inwards towards the central hole. This could generate potentially immense mountain ranges and volcanic activity along the inner rim of the planet where the plates collide.
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