Gravity links extra dimensions

UNIVERSES

Extra dimensions in space are large enough to hide parallel universes, which are layered just like a layer cake.

LIGHT STOPS

Light cannot travel between dimensions, so it is impossible for scientists to look into parallel universes.

GRAVITY ATTRACTS

Gravity passes freely between dimensions, causing attraction, which holds the universes in place.

BIG BANG

The parallel universes could collide, triggering a Big Bang, which devastates the universes, but produces new, parallel universes.