Posted: Dec 11, 2017 6:32 am
"We don't know the universe had an absolute beginning"
The second law of thermodynamics disagrees with that statement. The nature of entropy dictates that the available energy in the universe cannot remain in a state where it can be used for chemical reactions. Eventually there will come a point in the universe where the available energy is used up and is transformed into a form where it cannot be used for anything again. Stars then can no longer be made, current stars will one day decay into nothing, life within the universe will be choked out. Even matter will begin to decay until the universe itself, without usable energy to sustain itself, is just a few degrees above absolute zero, and all life is rendered impossible.
To suggest that they universe possibly has no absolute beginning, asserts that it is eternal. Were out universe eternal, then there already would have been an eternity for this to have happened. You might ask why the universe cannot simply start over again in a new big bang and recycle itself. However, the nature of entropy says that there would be no usable energy for another big bang to happen. The universe just stops and decays like a corpse. And we know this to be true because the laws of thermodynamics are absolutes in the universe. Matter and energy cannot be created or destroyed, and entropy will always increase. This is why even atheist physicists agree that the universe, BY NATURE, had to have a beginning.