It is accepted that the universe is expanding yes? and it is also expanding at a slower rate than the speed of light. therefore what happens when light hits "the edge of the universe"? where does this energy go? and i know that the universe is "everything" but if the universe is 'expanding' then it must have an edge to it. a point at which the universe 'ends' and a point where 'nothing' starts. and the conservation of energy LAW states that 'energy in a closed system cannot be created or destroyed,it can only be transformed.' so back to my question. where does the energy from the light that hits this 'barrier' go?