Hyperbolic space
From Conservapedia
Hyperbolic space, also called negatively curved space, is a form of non-Euclidean geometry in which space "curves away from itself at every point."[1]
It is impossible to construct a physical model of this space in our nearly Euclidean environment. "But scientists can still mimic hyperbolic environments to explore how certain physics plays out in negatively curved space."[1]
