I searched for the root of phenomenon and discovered that the origin of the universe is a simple structure. In other words, it was found that space is made up of infinitesimal grains, and they are in such a relationship that when one contracts, the other expands. The contraction and expansion of these grains form elementary particles, which are substances. It also forms gravitational fields and dark energy fields as spatial distortions. This discovery follows the law of conservation of energy and complies with the theory of relativity. And the universe circulation system can be predicted.The gravitational field is a positive energy field in which grains in the space around a star contract and form layers arranged in a spherical shape. The dark energy field is a negative energy field in which grains of space expand and form layers arranged in a spherical shape from the edge of the universe. An elementary particle is an excited state of space in which the expansion and contraction of grains in space rotate while shifting the phase. The center part represents character of a particle, and the foot part represents a character of field.Matter moves as it is dragged along by kinetic energy, which is waves generated in space. The kinetic energy of an electron separates from the electron and becomes a photon.Dark matter is a gravitational field. The dark energy field also explains the isotropic acceleration of galaxies moving away from each other and the existence of the cosmic background radiation. Also, contrary to the Big Bang theory, the universe circulation system predicts the existence of older, more mature galaxies the farther out into space.I found the following about elementary particles. 1. 1. The speed of a photon is different from the speed of light 2. The reason for the principle of constant speed of light, 3. Coulomb's constant, the speed of light, and Planck's constant are the same thing 4. The field is the foot of a particle. 5. The reason why an electrical field and a magnetic field are at right angle each other. 6. The reason why an electron and a proton have the same charge. 7. A magnetic field is created around electric current. 8. The appearance of electrical current and the way how electrical energy is transported, 10. Antiparticles are particles that move in the opposite direction of the particles, etc.