Ross Pomeroy at Real Clear Science has a great essay on the reluctance of atheists to accept Big Bang cosmology. Pomeroy, who is no fan of ID, writes honestly about the impediment that atheist bias imposed on astrophysics in the mid 20th century.
The ancient model of the cosmos, which was the model presupposed by most scientists prior to the mid 20th century, was Steady State: the universe was eternal and unchanging. Einstein’s relativity theory, extended by Georges Lemaître (a physicist and Catholic priest), suggested that space-time was unstable, and a model of an expanding universe, originating from a singularity (i.e. from nothing ), was a better fit to theory. The empirical evidence remained inconclusive for decades, although Hubble’s discovery of the red shift lent credence to the Big Bang model.
Read more: Source: Astrophysics and Molecular Genetics with the Parking Brake On