though dark matter and dark energy presently can not be detected by sight, touch, or sound, many astronomers declare that they exist because of the evidence from the gravitational force dark matter exerts upon the galaxies in our universe, the fact that the universe is expanding at a rapid rate, and how dark matter and dark energy confirm the properties of space. Yet, some astronomers disagree with the existence of dark matter and think that MOND is a perfect replacement for dark matter. Other astronomers
causing space to exert a fantastically powerful repulsive force that inflates the universe by a factor of about 10^20 in about 10^-32 seconds. This force then dies off, leaving the universe to expand at a roughly constant rate through the present day. That's the outline of the theory, and it agrees very well with the observations above. You're free to form your own philosophical interpretation of the origin of the universe.