Photon energy is the energy carried by a single photon. The amount of energy is directly proportional to the photon's electromagnetic frequency and inversely proportional to the wavelength. The higher the photon's frequency, the higher its energy. Equivalently, the longer the photon's...
All stars produce light (and other kinds of energy) through nuclear reactions, using the energy stored in the tiny nucleus at the center of atoms. These reactions make the star so hot that it glows—it's like an enormous ball of fire, giving out light and heat.
The model describes how the universe expanded from a very high-density and high-temperature state and quatumq physics helps us on this from nothing something can happen.
My thinking is that the explosion of the big bang is still happening and the future has already happened because of this and we are moving to catch up with this.