[robroys woman]

Not a sphere, but Ringworld is an interesting book about a ring, rather than a sphere.

[LesbianThespianGymnasticMidget]

I loved the Ringworld novels in my teens. Larry Niven spun great tales. Most of it was hard scifi. A Dyson Sphere? Where do you get enough matter? How do you get stuff to stick to it? You would have to spin it on an axis and end up with essentially a ring world within the sphere.

PS. I like geeky chicks. I married one. Hat tip.

[LesbianThespianGymnasticMidget]

Here Kripke explains it. https://www.youtube.com/watch?v=yk-Ivm9MhYs