Super Universe
Defender of God
There were specific predictions on element abundance of the universe, the temperature and anisotropy profile of the microwave radiation and temperature of the neutrino background, that the hot past condition of the universe necessitated. These predictions were confirmed by observation decades after they were made, and no other theory predicted these.
The rate of expansion is an input to the Big Bang theory and not a prediction of it. As the links in my earlier reply shows, the Big Bang theory provides three solutions. One for a universe where expansion is speeding up, one where expansion rate is constant and one where expansion rate is slowing down. The observations determine which of the three cases is actually happening for our universe. The predictions of the Big Bang works for any of the three cases.
When a new nebula is formed it's formed with about the same elements that you can find in any other nebula. Each new nebula does not get all unique elements.
The temperature of the microwave background radiation simply means that space is uniformly cold. That does not mean it was formed hot and then cooled evenly. It was always cold. Also, if you've worked with hot gasses or hot metals or even hot food in the microwave you would know that things do not cool evenly. Outer areas cool more quickly than central areas.
As for the neutrino's, the scientists used to debate whether the universe was open or closed or that it would be stable. If it was open it would continue expanding until everything was so far away from each other that galaxies would just burn out. If the universe stopped expanding and began to collapse then everything would end in a large black hole. Figuring out the mass of the neutrino was supposed to tell the scientists how much mass is in the universe and help them determine whether it was open or closed. Then they found out the universe was not just expanding but accelerating it's expansion so the open/closed debate is out of date. It's not just open, it's very, very open. And, last I knew, they were still trying to figure out the mass of the neutrino.
These predictions were confirmed? Space being uniformly cold just proves that space is cold. Cold things are not proof of past heat.
The big bang works for an open, closed, or stable universe? No, it doesn't. How does the expansion rate increase? Other than the initial big bang what is the force causing it to increase in speed? The big bang was supposedly 13.8 billion year ago, how could it still be causing things to increase in speed?
I can tell you that the universe will continue to expand until it reaches a certain point and then it will stabilize. That point will be so far into the future that it is beyond your ability to comprehend.