Diagram showing that an open universe appears saddle shaped, a flat universe appears flat, and a closed universe appears to be spherical… | Universe, Bigbang, Flats
Curiosity on X: "Flat or curved, open or closed, our universe is astonishing: https://t.co/IINZqnKla5 @AstronautAbby https://t.co/LmrgCLca2s" / X