It's interesting that in the beginning the universe was incredibly hot, everything moved at the speed of light, but was it incredibly dense and so time moved in

It's interesting that in the beginning the universe was incredibly hot, everything moved at the speed of light, but was it incredibly dense and so time moved incredibly slowly. Yet it expanded incredibly quickly. Apparently so quickly (and time moved so slowly), that parts of the universe became disconnected it becomes the explanation for the current lumpiness. The current lumpiness is apparently now alternate explanation for dark energy, which is an explanation for where the energy comes from to power the expanding universe. Colour me skeptical, but I think we are still missing something.