Why were Atheists so against the Big Bang Theory when it came out?
When the Big Bang Theory came out this went against what all Atheist scholars had been teaching up to this point in history. It was even called the "steady state theory of the universe" (aka there was no beginning). The Big Bang sounded way too similar to the biblical story of creation for most atheistic scientists and that there truly was a beginning to space and time. Add the fact The Big Bang Theory was made by a Christian, the Big Bang went on to draw the ire of atheists for quite some time.
Even NASA scientist and popular science writer, Robert Jastrow, famously described the discovery of the Big Bang like this: "the Big Bang turns out to be something of a win for the theistic point of view, which is founded on the idea that God created the universe ex nihilo – out of nothing."