jupitersterrain four

040121

As the universe has expanded since the decoupling event, it would otherwise be illogical that we could still observe background radiation at all

That the place where the Big Bang occurred is too far too be observed is a far more logical explanation than that it didn't occur at any particular place at all, but rather everywhere at once.
The explanation of spacetime metric is basically that "we cannot understand." Unfortunately, because mainstream physicists believe that spacetime metric cannot be conceived, no one tries to understand it, and so they are likely to use it as an explanation for anything that they cannot understand

Because of this, this interaction depends both on time and space.
The greater the space, the more time it takes for this interaction to happen. The more time passes, the smaller the space will become.

Space and time are linked through movement, and as movement is bound by the speed of light, so both space and time appear to be as well. This accounts for the effects encountered in relativity, such as time dilation and length contraction. Unable to move faster than light, all particles in an object which approaches the speed of light will approach the same speed and so their relative speed will decrease, causing a subjective dilation of time; unable to move faster than light, the force carriers in the object will slow down in one direction and speed up in the other, causing the object to contract.

Time is not a dimension of space, but the two are connected in that they are both caused by movement, and may therefore appear as though they are one