In this blog, I will compare the Static Universe Theory (SUT) versus the Big Bang Theory (BBT) in regard to their respective assumptions.

As it has been mentioned in

__Another argument against the BBT__, it is believed that only a Hot Big Bang scenario can explain the CMB, and any other explanation would have to be contrived. We show here quite the contrary that it is the BBT which is contrived in its assumptions to make all the parts fit in.

** Static Universe Theory**
(1) The Equivalence Principle is valid and the redshift from faraway galaxies is gravitational in nature. See

__The Equivalence Principle and the Big Bang Theory__.
(2) The universe is eternal and infinite.

(3) The CMB can be explained in terms of the surface of infinite redshift. See

__Olbers' Paradox __.
** Big Bang Theory**
(1) The Equivalence Principle is valid and the redshift is due to a Doppler Effect – the galaxies are moving away from each other.

(2) By extrapolating backward in time, the universe started as a singularity and then expanded.

(3) There is a 4

^{th} spatial dimension into which our 3-spatial dimensional world is expanding.
See

__Riemannian Geometry and the Big Bang Theory__.
(4) In order to solve the Einstein Field Equations to get to the Friedman Equations, one must assume the universe is homogeneous and isotropic.

(5) To justify (4), one must assume that the universe went through an inflationary period in the early stage.

(6) To justify (5), one must assume that quantum fluctuations popped out of the vacuum some 13.7 billion years.

(7) Since the universe is accelerating, one must assume that the universe is filled with Dark Energy, which must make up 75% of the universe in order to justify a flat space universe (As of now, the Vacuum Energy from (6) is out of step by 122 orders of magnitude with Dark Energy).

(8) To calculate the density of the universe, one must assume the universe is finite in size with its radius equal to its Schwarzschild radius.

(9) In order to tie in the CMB with the BBT, one must assume that the universe must behave like a nearly perfect idealized fluid, so that one can tie in the redshift to the scale factor in (4), which itself is tied in with temperature and time. One can then set a chronology of different reactions that would have happened at different temperatures/times, all of these requiring a number of parameters that can be fine-tuned with observation.

**Conclusions**
The BBT is a contrived theory which besides the number of assumptions that is needed to support the BBT - a much larger number than the SUT - it nevertheless leaves a certain number of unanswered questions such as: what evidence do we have that a 4

^{th} spatial dimension exists? If the universe didn't exist from t = -∞ to t = -13.7 billion years, what caused it to spring out of the vacuum some 13.7 billion years ago? How many more assumptions will the BBT need in order to reconcile the Vacuum Energy with Dark Energy in order to make that fit into the theory?