Modern telescopes allow scientists to look 13.75 billion years into the past, but the question of what lies beyond the observable universe is still relevant. An article about the mysteries of the cosmos was published in Popular Mechanics.
The Big Bang theory holds that the universe was formed about 13.75 billion years ago. At first, there was an incredibly dense “point” from which the universe expanded to its present size. The process of expansion occurred at the speed of light – this fact in the context of the provisions of the theory of relativity allows us to judge the age of the Universe.
The farthest region of the Universe accessible to observation is the so-called surface of the last scattering. From this region come the photons of relic radiation formed immediately after the Big Bang. Beyond the surface of the final scattering is something that we cannot yet explore with the existing scientific equipment.
Astronomers cannot look beyond the surface of the final scattering, but they can draw some conclusions about the space behind it. To do this, scientists study the astrophysical processes that take place at the edge of the observable universe. The region hidden from observation may represent a space of colossal size that we cannot see because of features related to the physical limitations of the speed of light.