If the big bang didn't happen, then how could evolution happen?
Science is about understanding the universe. Trouble is, the universe is a big, complex place. It's not possible to study everything at once. That's why scientists take smaller subjects and examine them in detail. Biology is one of those subjects and evolution is a part of biology. the Big Bang is not biology. In trying to force an understanding of both the Big Bang and biological evolution as if they were one subject, you're making both of them harder to understand, not easier.
Does science have any theories other than the big bang about how the universe started that do fit with evolution?
Well yes; creationism, although I would hesitate to call it science. Evolution is perfectly compatible with many forms of creationism. One could simply assume that a god (or gods) created life and that then, that life proceeded to evolve.
Now I don't think that's a good idea or anything, but certainly evolution is compatible with that scenario. One could posit any number of scenarios whereby life came to exist. It doesn't really effect evolution. All we need know is that life began to exist, then began to evolve.
I would also note that we can observe evolution taking place in the here-and-now. No amount of speculation about origins could possibly trump those real-world observations.
I think if the theories do not fit together, then at least one of them is wrong.
Or our understanding of them is wrong.
I can accept that the term "big bang" may not be accurate and is simplified, but if science just uses labels to help describe things (and those labels are not the whole theory) then why not accept the label of "God" to help use understand things. It doesn't mean it has to be my personal God or anything like that.
Well as Crashfrog notes, it's not a very helpful label. It's actually pretty unhelpful. Further, the Big Bang theory goes a lot deeper than just a label. It is built upon multiple observations and a very profound understanding of physics. Don't confuse the label with the theory itself.
Doesn't the theory of God fit better with creation science then the big bang theory fits with evolution theory?
Both of those pairs fit each other well. Only one pairing has the advantage of being true.
I don't get it though; what is it that you think makes evolution and the Big Bang a poor match for each other? Where's the beef?
Mutate and Survive