Does the shape of the Universe refer to the curvature of spacetime in 5-dimensional space?
67531
Universe being flat and why we can't see or access the space "behind" our universe plane?
42584
Curved space-time VS change of coordinates in Minkowski space
14329
What is known about the topological structure of spacetime?
141447
Inverse Square Law and extra space dimensions
51239
Do all the spacelike curve terminate at the spatial infinity $i_0$ in the Penrose Diagram of a Schwarzchild black hole?
144274
Why mass & energy bend spacetime?
78769
Assuming that the Cosmological Principle is correct, does this imply that the universe possess an empirically privileged reference frame?
21084
Size of the universe
56044
Does Earth's Rotation Affect Its Shape?
40548
Why would spacetime curvature cause gravity?
145003
How can a point-like particle "feel" gravity, if locally the curvature of spacetime is always flat?
152130
Maximum size of the observable universe?
23399
Nature of spacetime 4-vector and tangent space?
145010
Can we see shape of normal curve somewhere in nature?
121914
Unitary representations of the diffeomorphism group in curved spacetime
117205
Expansion of the Universe: is new space(time?) being created or does it just get stretched?
73523
Shapes of galaxies