I was raised Catholic, but then I read a book about space and I discovered the Big Bang. Also, over the years I have developed a deep, ingrained hatred of the Church as an institution.
The first scientist to theorize the Big Bang was also a Catholic priest. He was never punished or anything, and the Church has never disbelieved in it.
http://en.wikipedia.org/wiki/Georges_Lema%C3%AEtreIIRC the same guy also had to tell the higher ups not to use it as proof of God because they were eager to do so.
Also, I don't think his problems with the Church as an institution had anything to do with the Big Bang.
