In the cyclic universe theory, universes are created and then disperse into space, one after another, with each cycle lasting trillions of years. From a big bang singularity, this universe composed of plastic and light, unfolds from its dense state with an energetic crackle. The present fades into the past and the future comes into being. The space will continue to expand, growing darker, colder and more diffuse. When the universe eventually becomes flat and featureless it will collapse and come together in another cosmic bang.