/lit/ - Literature

I've recently been thinking about hollow earths and how cool I think they are but now stupid they sounds, especially in regards to gravity, but then I realized that it would make sense that gravity works outwards and that the sphere doesnt collapse if the sun is a white hole. Equally, this could make dyson spheres somewhat sensical as rigid shells that surround a star on all sides.
Has there been such a fantasy or science fiction book?