Nothing on the fundamental levels of reality actually dies. They retain some energy always. Information cannot be destroyed (tried, tested, proven to be true) and thus absolute zero is not possible in the current state of the universe regardless of how much it expands. Light can get absorbed and can be released if the atomic bond is triggered to break down in the material which absorbed the light. Matter and Anti Matter when brought together results in a 100% conversion of mass into energy so that’s the only way known so far which can release all of the absorbed energy.

I'm the man who grabs the sun, riding to Valhalla
We will ride eternal, shiny and chrome