The Cosmic Microwave Background of our Universe is as follow:
"The CMB has a thermal black body spectrum at a temperature of 2.72548±0.00057 K."
In astronomy, objects such as stars are frequently regarded as black bodies, though this is often a poor approximation. An almost perfect black-body spectrum is exhibited by the cosmic microwave background radiation.
Based on the current BBT theory:
"The Cosmic Microwave Background (or "CMB" for short) is radiation from around 400,000 years after the start of the Universe.
Ever since the Big Bang, the Universe has been cooling and expanding. By around 400,000 years through its life it was cool enough (though still around 3000 Celsius).
The expansion of the Universe has stretched out the CMB radiation by around 1000 times, which makes it look much cooler. So instead of seeing the afterglow at 3000 degrees, we see it at just 3o above absolute zero, or 3 Kelvin (-270o C).
"The recent measurements of the power spectrum of Cosmic Microwave Background anisotropies are consistent with the simplest inflationary scenario and big bang nucleosynthesis constraints. However, these results rely on the assumption of a class of models based on primordial adiabatic perturbations, cold dark matter and a cosmological constant."
Hence, the cosmological constant is a key component for that assumption.
However, Einstein had stated clearly that the Cosmological constant is a severe mistake. Therefore, without the cosmological constant, this whole theory is useless.
Actually, we don't even need Einstein statement to understand it.
The CMB is a reflection of our current Universe. It isn't a reflection of the universe as it was at age of only 400,000 year (According the BBT). That assumption is a simple fantasy.
We must explain how could it be that our CURRENT universe has almost a perfect black body radiation.
Based on the BBT, it is not feasible to get a Black body radiation from the current shape of the universe – it is just impossible. Therefore our scientists are going to the early years of the Universe in order to get some support from the history to this unrealistic theory.
We don't have to go back.
Einstein had already given the answer.
He said that our universe is infinite in its age and in its size.
We can easily prove that any infinite object must have a black body radiation.
So, the black body radiation of the CMB is a clear indication that the Universe is Infinite!!!
Therefore, Einstein was fully correct with his static Universe cosmology model, while the BBT isn't relevant any more.
Edited by davdan, 24 May 2017 - 10:34 PM.