## Hubble Constant and Age of the Universe

The Associated Press released an article on Friday, September 13, 2019, that read, “Study Finds the Universe Might be Several Billion Years Younger.” The news story sites a study released in the journal Science on September 12. In the study, Inh Jee of the Max Planck Institute in Germany used a new method to measure the Hubble Constant, which scientists use to calculate the age of the universe.

Right away, we have seen some fundamentalists jumping to the conclusion that the headline means the Earth is 6,000 years old after all. The Bible doesn’t tell us how old the creation is. The age of the Earth is a denominational issue for those whose human doctrines won’t work if the Earth is more than 6,000 years old. Our concern is that people understand that this is not an issue about whether God exists or whether the Bible is true.

We can measure the age of the universe by determining the expansion rate of the cosmos, which is the Hubble Constant. Measuring that expansion has been incredibly difficult, and that is what the headline refers to. In previous years the Hubble Constant has been estimated to be 70. Inh Lee and her team used a new technique called time delay gravitational lensing which gave a value for the Hubble Constant of 82.4. That would reduce the age of the universe from the currently accepted 13.7 billion years to 11.4 billion years. Other scientists using other techniques earlier this year have given a Hubble Constant of 74 and 73.3. Previous methods have given a value as low as 67. A lower value means an older universe, and a higher value of the Hubble Constant means a younger universe.

If you know the value of the Hubble Constant, the calculation of the age of the universe is very simple. We all know that travel time depends on two things. If I go 100 miles at 50 miles per hour, how long did I travel? The obvious answer is two hours. Distance traveled is equal to the speed at which you travel multiplied by how long you travel at that speed. We can measure the size of the cosmos by several techniques. Triangulation is difficult because the size is so huge that the apex angle of the triangle is too small to measure accurately. However, triangulation does give us an idea of the vastness of space.

The further light travels through the cosmos, the lower the frequency of the light. That effect is caused by dust particles in space scattering the higher frequency blue light. The effect is called interstellar reddening, and it gives us a good measure of the size of the cosmos. Several other methods involve complex energy production by various stars. All of those methods provide a reasonably consistent measure as to how big the cosmos is. Applying the Hubble Constant to the size of the cosmos provides us with a measure of the age of the universe.

The point of all of this is to get values that science can use to study astronomical processes in deep space. The problem is that our measuring devices are primitive in terms of what we need for such distant objects. What it means to those of us who marvel at the size and complexity of space is that more than ever, “The Heavens declare the glory of God and the firmament shows His handiwork” (Psalms 19:1).

## Why Such a Large Universe? – Viewing Cosmological History

We have received some questions from readers who are perplexed by the fact that we frequently refer to a discovery or an event in outer space, millions of light-years from Earth. We have also mentioned NASA’s daily blog (apod.nasa.gov) showing gorgeous views of deep space objects many light-years away. Why such a large universe, and what does that mean to us?

It all comes down to viewing cosmological history. When we look through a telescope, we are looking at the past. If the next closest star exploded, it would be over four years before we would see it. You can see the light from the nearest major galaxy called the Andromeda, with your naked eye. It is two-million light years away, which means the light from that galaxy left there two million years ago. When we look at the sky, we are viewing cosmological history. Even the light from the Sun left there eight minutes ago. The question boils down to, Why such a large universe? Why did God create so much? It may seem presumptuous even to discuss that question. We would not attempt to speak for God who obviously can do whatever He wants to do. Nevertheless, there are some observations we can make.

First, it would be foolish to question whether the cosmos really is that large. There are a dozen different methods of measuring the distance to an object in space, and they all agree even though they are based on very different assumptions. The Doppler shift is very different from interstellar reddening which is different from cepheid variable measurements, but they all give the same answer for distances in space.

Some creationists suggest that God created the light that appears to be from a distant galaxy or star, already reaching Earth some 6000 years ago. In other words, what we see today when we look at the stars is essentially a video of something that never happened. We think we are viewing cosmological history, but we are being fooled. First of all, this explanation was invented to defend a denominational teaching that is not biblical. The Bible does not give the age of the cosmos or the Earth. No human calculation based on interpreting the Hebrew words in the Bible can stand up under examination.

However, the main problem with saying that God is trying to fool us is that such an explanation degrades God. From Genesis 1:1 to Revelation 22 the Bible repeats over and over that God is Truth. God does not lie, He does not mislead, and He does not misrepresent. James 1:13 says it well: “Let no man say when he is tempted, I am tempted of God, for God cannot be tempted with evil, neither does He tempt any man.” Faking an event in space that never happened so that humans could be fooled by it, would certainly be a deliberate effort to tempt honest, seeking humans into believing something that is wrong.

So why such a large universe? Why are we able to view the cosmological history of stars forming and dying? Why do we see billions of other galaxies beyond our Milky Way Galaxy? There may be multiple reasons known only to God. The ancient psalmist stated it well: “The Heavens declare the glory of God and the firmament shows His handiwork” (Psalms 19:1). The writer of Proverbs in chapter 8 has wisdom saying: “The Lord possessed me in the beginning of His way, before His works of old. I was set up from everlasting, from the beginning, before the Earth ever was…” (verse22-23). These statements and many more like them are not just expressions of ancient people. Here we are more than 2,000 years after Christ, and we are still trying to understand what electric charge is and what causes gravity. Moses couldn’t even see most of what modern science is investigating.

I would suggest that God structured the massive size of the cosmos and gave us the ability to watch matter being altered to produce stars and new planets so we could see His power and wisdom. Romans 1:20 rings true as we admire the work of scientists who help us understand that “the invisible things of Him from the creation of the world are clearly seen, being understood by the things that are made….” Asking why such a large universe leads us to say, “I will praise you, Lord, for I (and the cosmos) am fearfully and wonderfully made: marvelous are your works” (Psalms 139:14).
— John N. Clayton © 2019