Curvature of the Universe

Two different shaped spheres, or even a sphere and an ellipsoid are basically the same shape. One is infinite, the other is finite. There are other shapes, like ones with a hole in it, like a doughnut, that are not the same as a sphere or a flat sheet. That's the meaning of shape in a global sense, which is related to, but different from curvature in a local sense. Ro: When you're talking about gravity cana bending or giving space curvature, you're actually talking about the curvature of space time.