What is the farthest thing in the universe?
No one knows. You see, because of the physical laws of the universe, there is a physical limit to how far we can see. That is, (if I’m not mistaken) about 45 billion light years in any direction (making the visible universe about 90 billion light years across), but this is all based on interpretations of existing data, and those interpretations are based on theories. Good theories, but not necessarily perfect. The farthest thing we can see in any direction is the Cosmic Microwave Background, which is simply residual energy that permeates the entire universe. It is theorized to be left over energy from the Big Bang. In any direction you look, you can see the CMB. It is low-power electromagnetic energy. Its temperature is about 2.75 degrees Kelvin, which means it is very, very weak energy. Nevertheless, it is everywhere, and it is a remnant of the intense energy which supposedly existed at the Big Bang. I’m not challenging the Big Bang theory, only reminding you that it is just a theory,
