Today’s blog is a bit philosophical. But we are all philosophers and think about big questions even though we do not use $25 words to describe them. So I invite you to give some thought to the concepts below that argue against the premise that the universe is somehow eternal.
Cosmology is the study of the universe. In the distant past it was assumed that the universe was eternal and existed forever. But in the last generation there has been considerable reflection on that premise and much discussion about what is known as the “big bang” theory. This is a popular way of describing the Friedman-Lemaître model, which looked at the “redshift” in the light waves of the galaxies moving away from us and concluded that the universe is expanding. In 1929 American astronomer Edwin Hubble verified the theory of Lemaître and Friedman, changing the debate in our modern age.
The implications of this model, which is increasingly popular, leads to the conclusion that the universe had a beginning. There was a time when it did not exist. This lines up well with Genesis 1:1, which describes God as the creator of all things. If all matter and energy did not exist, it had to be produced by something that was different from matter or energy. For that agent to have material properties or be some kind of energy force is illogical. If all matter and energy at one time did not exist, then the agent that produced such things had to be a different order than matter or energy. The Christian perspective is that this creator was the God who revealed himself in scripture.
Some resist the conclusion of the “big bang” theory that gives credence to the biblical account. They assume that the universe can somehow be infinitely old. But that premise also fails on other grounds. For example, think of counting back from this second to infinity. You might go 0, -1, -2, -3, etc. Before any number could be counted an infinity of numbers would have to be counted first. You get driven back to the past so that no numbers can ever be counted. No matter how many numbers you count, there are an infinity of numbers to go. No series of numbers formed this way can actually be infinite.
William Lane Craig points out that the second law of thermodynamics also argues against an eternal universe. He asks, “If, given enough time, the universe will inevitably stagnate in a state of heat death, then why, if it has existed forever, is it not now in a state of heat death?” We should already be in this state of equilibrium if we’ve had an infinity of time to reach it. But the universe is not in a state of heat death. That points to a finite beginning.