Study of world history
According to the theories of physics, if we were to look at the Universe one second after the Big Bang, what we would see is a 10-billion degree sea of neutrons, protons, electrons, positrons, photons, and neutrinos. As time went on and the universe cooled, it was able to reach a temperature where electrons formed with nuclei to create neutral compounds. Energy is the one of the major ingredients that went into the big bang. In order for all of this to happen, energy had to be involved.