From Wikipedia ( I know…)
Independently deriving Friedmann’s equations in 1927,
Georges Lemaître, a Belgian physicist and Roman Catholic priest, proposed that the inferred recession of the nebulae was due to the expansion of the Universe.[35]
In 1931 Lemaître went further and suggested that the evident expansion of the universe, if projected back in time, meant that the further in the past the smaller the universe was, until at some finite time in the past all the mass of the Universe was concentrated into a single point, a “primeval atom” where and when the fabric of time and space came into existence.
Why would a Roman Catholic priest propose something that disproves God???
The Big Bang, like so many other things in science, explains “how” but does not really explain “why”…God has more to do with the “Why” of things…So in a nutshell that is why there is still room for God…
Peace
James