Carl:
My point is that the Church through Genesis provided LeMaitre, a priest, with a clue to the real origin of the universe that a world famous scientist had refused to concede because he also happened to be an atheist.
First of all let me repeat that I entirely accept the Big Bang as an origin for the *observable *universe. Other, plausible hypotheses, such as Hoyle, Bondi and Gold’s Steady State model were fatally undermined by the discovery of the cosmic microwave background by Penzias and Wilson. However, you must know that, although the basic hypothesis of Georges LeMaitre of a Big Bang has proven to be correct and now forms the foundation of modern cosmology, LeMaitre’s own theoretical formulation for the expansion of the universe was very incomplete and flawed in a number of respects, and the current cosmology depends on the Friedmann-Robertson-Walker metric. He thought cosmic rays were evidence for an expnding universe (which they are not). In addition, he had no idea how to solve the Horizon and Homogeneity problems. This is not to belittle LeMaitre’s achievements in any way - simply to point out that there are many others who have built the concordance model of cosmology.
However, we started talking about this when you suggested the existence of the Big Bang necessitates a first cause.
I pointed out then that Hawking has developed solutions of the Feynman path integrals, using the Wick rotation, that yield histories in imaginary time (that can be analytically transformed back to real time) that yield a history of the universe without the need for boundary conditions.
There is more: Linde’s development of chaotic inflation has, as a consequence, a multiverse in which our universe is one bubble in a temporally and spatially infinite sea of bubbles. See for example Max Tegmark’s (Max Tegmark, by the way, has recently published powerful evidence based on observations from the Sloane Digtal Sky Survey that independently confirm findings from the Wilkinson Microwave Anisotropy Probe about the basic cosmological parameters) excellent article on multiverses here:
wintersteel.homestead.com/files/ShanaArticles/multiverse.pdf
The fact is that, looking back in time, decoupling of radiation and matter occurs at 379,000 years after Big Bang which means that the universe is opaque to sight before that. Nevertheless, we can derive information about the earlier history of the universe from acoustic data condensed in the CMB anisotropy as a consequence of the early Sachs-Wolfe effect. However, at the Big Bang itself, space-time and the laws of physics break down at the singularity of the Big Bang, and, assuming that in future findings, the Big Bang remains a strict singularity, there is no way to probe beyond it. This does not logically lead to the need for a First Cause deity, because of the Hawking, Hartle, Linde and Guth hypotheses.
The impossibility of logically proving the finiteness or the infinity of the universe was shown by Immanuel Kant in his Critique of Pure Reason, and in the absence of empirical evidence, the finiteness or infinity of the multiverse is indeterminate.
What does this mean? In the absence of the ability to garner evidence, whether the ultimate multiverse is finite or infinite is an open question. It is possible that evidence could support either finite or infinite hypotheses, but so far it doesn’t. There is no logical necessity, today, to accede to a finite multiverse and no need for the postulate of a first cause. Even if the universe is shown to be absolutely finite in real time, there are situations that require no boundary conditions.
In short, the argument of a temporally finite universe does not support the existence of a First Cause (and a deity)
Alec
evolutionpages.com