Please pardon me for stepping in for a moment, but I would like to point out something real quick. For the sake of those lurkers who might be following this discussion, it is important to point out that a vast knowledge of various scientific fields (astronomy, astrophysics, evolution theory, etc.) is NOT necessary to be an atheist. Atheism is strictly a lack of belief in any god(s). Period. There is NO “general consensus” among atheists about anything having to do with scientific theories. One thing has nothing to do with the other.
Personally, I am an atheist primarily because the things I was taught as a kid about the bible/god/satan/heaven/hell never made any sense to me. It was only after I got older and better educated and better experienced in life that I was able to explain WHY it never made sense to me. Even then, however, it took me several decades to get past the fear of hell and fully break away from religion. Granted, science in general has always been a fascination of mine, and it did help me come to terms with why the teachings of the bible always seemed so farcical to me. A good knowledge of history and of how religions develop is also handy. However, there are many, many atheists out there who have very little interest in such things, much less any extensive knowledge of them. Yet, they are indeed atheists, nonetheless.
I bring this up because while reading your posts you make it seem as though ALL atheists hold the same understandings within scientific fields. I realize you may not be doing that intentionally. Just wanted to make you aware of it before it ends up biting you in the ass.