This documentary explores the wormhole theory, a mind-bending concept in physics that could allow shortcuts through spacetime and transform our understanding of the universe.

Fragments of energy may be the fundamental building blocks of the universe. The theory combines the ideas of particles and waves into a concentration of energy that flows throughout space and time.

The growing block view of time holds that the past and present are real whilst the future is unreal; as future events become present and real, they are added on to the growing block of reality.