The Big Bang Theory implies that the universe erupted from nothing or from an infinite state of singularity in which the entire energy and existence of the present universe was confined. Initially as the universe bursts out of this prison it expands through various stages until matter and energy is released in open space and matter is freed to form into gaseous clouds, then into stars gathering into groups of galaxies.
Contrary to the often held notion that the Big Bang is an atheistic model of existence, the Big Bang theory would require the need of an original mechanism, it implies the necessity and need for a creator who powered it, including a cause behind the universe that depends upon intelligence. This has indeed caused concern within the scientific academic world, which otherwise induces natural explanations only (Andrei Linde, The Self-Reproducing Inflationary Universe, in The Scientific American (ed.) David H. Levy, New York, Macmillan Publishers, 2000, p. 386).
Very few atheists dare to touch this topic in details and most scientists and philosophers either remain silent on the matter or at least indicate the possibility of divine action. The former atheist Antony Flew claims that the Big Bang theory changed everything and disturbed the naturalistic paradigms of the cosmologist and the atheist alike (There is a God, pp. 136-7). Also Hawking records that there were reactions against his work since it upset many physicists while it delighted religious leaders who believed in an act of creation, ‘for here was scientific proof (Hawking, The Universe in a Nutshell, p.41).’ Indeed the atheist exponent, Quentin Smith, concedes that among atheists an uncomfortable silence ruled and the response is weak and almost invisible (see Quentin Smith, A Big Bang Cosmological Argument For God’s Nonexistence (Infidel.org, 1992)
Consequently, a number of atheist scientists have embraced as a clear probability the existance of a creator, e.g. Robert Jastrow and Antony Flew (see: Jastrow, Until the Sun Dies, p. 21 and Antony Flew, There is God: How the World’s Most Notorious Atheist Changed His Mind (New York: Harper Collins Books, 2007), pp. 136-7).