http://www.aleph.se/andart/archives/2014/02/torusearth.html
This is a math heavy article about the possibility of a solid planet in the shape of a torus or ring. Includes diagrams of gravity and temperature. Rare to the point of non-existance, not stable over geologic time scales. But something really cool to add to your Traveller universe.
This is a math heavy article about the possibility of a solid planet in the shape of a torus or ring. Includes diagrams of gravity and temperature. Rare to the point of non-existance, not stable over geologic time scales. But something really cool to add to your Traveller universe.