In the world of physics, the concept of light cones helps us understand how information and causality are transmitted. The limitations of light speed mean that events can only be perceived within the light cone, revealing the restrictions of causality.

Furthermore, the theory of relativity demonstrates the distinction between time and space as different dimensions. Space can move freely, while time is a unidirectional flow. In the absence of gravity, spacetime is uniform, but massive objects distort it, as described by the general theory of relativity.

The theory also suggests that the more significant the mass, the more pronounced the distortion of spacetime. Black holes, the extreme examples of this distortion, possess such immense gravity that nothing can escape their pull.

Hawking's black hole paradox highlights that for observers far from a black hole, spacetime appears flat. However, for those nearby, spacetime is drastically distorted. Passing through an event horizon of a black hole redefines the concepts of time and space, creating puzzling internal structures challenging our understanding of the universe.