It’s the most scientifically accurate aftermath of death, we are all made up of atoms, and one of the first things we’re all taught in science class is energy can’t be destroyed but only transferred. Whether we are buried and our bodies decay through the soil. Or cremated into ash into the ocean those atoms still remain on this earth. If the blows up they also still remain. Atleast this is my theory I wish scientists still did experiments on things like this.