I ask the question, “Why is the universe so special?” Now scientists don’t like things to be special; we like things to be general, and our natural anticipation would have been that the universe is just a common or garden specimen of what a universe might be like.

But we’ve come to understand a lot about the history of the universe. We know that our universe started 13.7 billion years ago, and it started extremely simple, just an almost uniformly expanding ball of energy, about the simplest physical system you could possibly think about. But a world that started so simple has of course become rich and complex. With you and me, in fact, the most remarkable and complex consequences are its history, at least of which we are aware. The human brain is far and away the most complicated physical system we have ever encountered anywhere in our exploration of the universe.

That fact itself might suggest that something has been going on in cosmic history rather than just one thing after another. But we’ve also come to understand many of the processes by which this rich fruitfulness has come to birth. As we’ve come to understand these, we’ve come to see that though these processes are of course evolving processes, they took long periods of time – the universe was 10 billion years old before any form of life appeared in it, at least as far as we know anyway – and life of our complexity only appeared yesterday.

Nevertheless, the universe is pregnant with life, pregnant with the possibility of life, essentially from the beginning onwards. By which I mean the given laws of nature had to take a very specific, very finely tuned form, if the universe was to have so fruitful a history.

That’s a very remarkable discovery, and let me give you some examples of why we believe that. If you’re going to have a fruitful universe, one of the first things you have to get right is that you have to have the right stars in the universe. The stars are going to have a very important role to play. First of all, you must have some stars that are going to be very long lived, live for billions of years, steadily burning, steadily producing energy which will enable the development of life on one of the encircling planets. We understand what makes stars burn in that sort of way very well, and it depends on a delicate balance between the strength of gravity and the strength of electromagnetism. Electromagnetism is the force that holds matter together. The seats on which you are sitting are held together by electromagnetism and in fact you are held together by electromagnetism.

If you alter that balance a little bit in one direction the stars will begin to burn intensely, furiously, just pouring out energy and they will only live a few million years rather than a few billion years. If you move it a little bit in the other direction they will burn so slowly they will be brown stars and they will not produce enough energy to fuel the development of life. So you have to have a very delicate finely tuned balance between the strength of gravity and the strength of electromagnetic forces in a fruitful universe.

Remember, science takes the laws of nature, takes the given strengths of gravity, the given strength of electromagnetism, uses that to explain processes in the world, how things happen, but it doesn’t explain where those laws of nature come from. They are just brute facts as far as science is concerned.

And the stars have another absolutely indispensible role to play. The stars are the place where the heavier elements essential for life are made in the interior nuclear furnaces. There are many elements that are necessary for life, of which carbon is perhaps the most essential. Carbon is the basis of the long chain molecules, which are the biochemical basis of life. The early universe only makes the simplest elements; it makes hydrogen and helium and it makes no carbon at all. Carbon only begins to be made when the universe, which started uniform, begins to condense and become lumpy and grainy with stars and galaxies. As the stars condense they heat up, nuclear processes begin again in their interiors. And it’s those nuclear processes in the stars that make carbon and the heavier elements. Every atom of carbon in your body was once inside a star. We are people of stardust made in the ashes of dead stars.

And that’s a very beautiful process that takes place in that sort of way. And one of the great triumphs of astrophysics and the second half of the 20th century was to unravel that process. One of the people who did some of the most important work on that was a senior colleague of mine in Cambridge called Fred Hoyle. And they were trying to figure out how to make carbon. They got helium, and if you can make three helium nuclei stick together that will produce carbon, but when you have something as small as a nucleus it is impossible to get three to stick together at one time, they’re just too small.

Ok, so let’s do it step by step. Stick two together gives you berylium. Helium 4 gives you beryllium-8, hope it stays around for a bit, another helium comes along, attaches itself, and bingo, you’ve got carbon-12. That’s the obvious thing to think about but it doesn’t work in the obvious way, and the reason it doesn’t work in the obvious way is that beryllium-8 is terribly unstable. It doesn’t oblige you by staying around long enough to catch that third helium, at least in an ordinary, straightforward way.

But Fred realized that it would be just possible for this to happen if there was a very large enhancement effect, in the trade we call it resonance, occurring in carbon at just the right energy, it has to be the right energy, which would enable that attachment process to catch that third helium much much more quickly that you might have thought, in fact so quickly that some of them would get caught before the beryllium-8 disappeared. It was a very good idea, and he must have felt pretty pleased with himself and he went off to just check in the nuclear data tables of this particular resonance’s energy levels, and it wasn’t in the tables, but he knew it must be there, he’s carbon based life like you and me.

So he rang up some friends in the States, a father and son team who were good experimentalists and he said, “Look, you missed something. There’s a resonance and energy level in carbon that you haven’t spotted, and I’ll tell you exactly where to look for it. I know exactly where this energy has got to be. You go look for it.” And they said, “No, no, we don’t want to do that, we have more interesting things to do.” But Fred was very determined and he bullied them into looking for it and they found it.

Now that’s a wonderful achievement, to predict an energy level in carbon on the basis of how it might have been made in the stars is a fantastic scientific achievement. But it’s more than that. Fred had a lifetime conviction of atheism, realized of course that if the laws of physics had been just a little bit different that resonance wouldn’t have been there, and the possibility of carbon-based life is too significant for it just to be a happy accident in his view, so he says in a Yorkshire accent that is beyond my power to imitate, he said that the universe is a put-up job. Fred didn’t like the word God, and so he said some Intelligent, capital “I” Intelligence, must have monkied with the laws of nature to make carbon production possible. What that could possibly be I don’t know, but the more sensible thing to say is that creation is ordained, that the laws of nature would be such, as to enable the fruitfulness of carbon-based life.

We’ll come back to evaluating that possibility in a minute, but before we do, let me give you two other examples of how specific, how special, our universe has to be for us to be able to be here today to think about. We live in a universe that is immensely big, beyond our powers to imagine really. There are a hundred thousand million stars in our galaxy in the Milky Way, of which our sun is just a common or garden specimen, and there are about a hundred thousand million galaxies in the observable universe, of which our Milky Way is a pretty common or garden specimen. So we live in a world that is unimaginably vast, and sometimes we might feel upset by that and think, “What could be the significance of us who are simply inhabitants of a speck of cosmic dust, as you might say, in this vast, vast universe?”

Nevertheless, if all those stars were not there, we would not be here to be upset at the thought of them. Because there is a direct connection between how big a universe is and how long it lasts, and a universe that is significantly smaller than our universe would not have been able to last the 14 billion years, which is the necessary time to produce beings of our complexity. So that’s another condition of the world that has to be right for human beings, or something like human beings, to be a possibility.

One final example, which is the finest tuning of all: quantum theory suggests that there should be an energy attached to space itself. In quantum theory the vacuum, so called empty space, is not just a void. There are things called vacuum fluctuations which occur in a continual sort of seething mass of things coming into being and going out of being all the time. So while there is nothing there that doesn’t mean there is nothing happening. That may sound strange and paradoxical but believe me that’s what quantum theory implies. And of course these happenings, these fluctuations, generate a certain amount of energy, we call it “zero point energy”, and that energy is spread out over the whole of space. So we expect there to be energy associated with space.

And just recently the astronomers have discovered something called dark energy which is driving the expansion of the universe, which is just such an energy associated with space. Well that’s very good, you might say. However, when we estimate, just from thinking about quantum theory, how much energy there should be in space it turns out to be a fantastically large amount, and when we see the amount of energy there actually is per volume in space, it turns out to be very, very small in relation to that expected size. In fact, it turns out to be smaller by a factor of 10^-120. That means by a factor of 1 over 1 followed by 120 zeros. You don’t have to be a great mathematician to see that’s a fantastically small number. So some fantastic cancellation has taken place to turn that big number into the tiny number that we actually observe, and if it hadn’t taken place we wouldn’t be here to observe it because significantly higher energy would simply have blown the whole show apart too fast for anything interesting to happen. That’s the finest tuning that we know in the universe: one part in 10¹²⁰.

So we live in a world that is very remarkably finely tuned, and we have to consider that. And all scientists would agree about what I have been telling you; this is non-contentious. Where the contention comes in is what we might make of that, what is the further significance of it.

In the conclusion to Dr. Polkinghorne’s lecture, he looks at two explanations for the "fine-tuning" principle -- the multiverse theory and the existence of a divine intelligence -- and explains why natural theology alone is not sufficient to make the case for a God who interacts and cares for his creation. To make the case for theism, he argues, we need revelation, God's self-disclosure. This is manifest in various ways, including that which we experience personally, including ethics and aesthetics.

In part 1 of his sermon “Over and Above Naturalism”, Joseph Barkley explained that science does not reveal the greater purpose to life. He also looked at Naturalism, a philosophy that depends on atheistic assumptions and scientific knowledge, stripping the material world of higher significance. In part 2, Barkley suggests that material creation is not the end of our understanding (as Naturalists think), but a beginning that unveils the majestic and power of a Creator who loves us. Exploring the grand dimensions of the Milky Way galaxy as well as our unique solar system, he points to the greatness of God and smallness of humanity. However, the most profound truth is God’s incomprehensible love for each person that leads us into a divine relationship with him.

Barkley first suggests that all scientific discoveries, rather than confirming the absence of a God and divine purpose, affirm the presence of an intelligent God with a plan for his creation. Each new fact about nature is just another “clue,” he says, to God’s splendor. This is clearly taught in Psalm 19: 1-2 (NIV): “The heavens declare the glory of God; the skies proclaim the work of his hands. Day after day they pour forth speech; night after night they reveal knowledge.” Though some argue that Bible does not accurately describe the natural world, Barkley affirms the infallibility of Scripture in revealing truth about God and the purpose of his creation.

Barkley demonstrates his point by recounting stunning details about the Milky Way, just one of billions of beautiful galaxies. Within it, stars are birthed and others die, planets are pulled toward stars with great gravitational force, and other celestial bodies are also always in motion. He focuses on the mind-blowing detail of the galaxy’s length, which is so vast that it requires the measurement to be in light years. It is 100,000 light years wide, and each light year represents 5.88 trillion miles. What is more, the Milky Way is only a middle-sized galaxy! God rightly declares through the prophet Isaiah, “‘So—who is like me? Who holds a candle to me?’ says The Holy One. Look at the night skies: Who do you think made all this?” (Isaiah 40:25, The Message translation). As Barkley puts it, “that is the question the creation is presenting to us today—who could have possibly made all this?”

Not only does creation reveal God’s grandeur, but it also speaks of how “unimaginably small” we are in comparison. In fact, when the Voyager space probe produced sixty separate pictures to capture our solar system from 4 billion miles away, planet Earth appeared as “a little mote of dust suspended in a sunbeam,” (Figure 1) according to Carl Sagan. If our entire planet—holding the entirety of human life—appears as a speck of dust, then how much more inconsequential does humankind itself appear? This comparison helps to “right-size” humanity in relationship to God. We are infinitely small and God is endlessly vast, and yet he deeply loves us in the midst of our weakness.

Finally, creation stirs the human heart with longing to know the “who” behind the “what” in this world. For thousands of years, God revealed himself to Israel through the Law and the prophets, but when God decided to present the clearest, most perfect picture of himelf, he sent his beloved Son, Jesus Christ (Figure 2). Colossians 1: 15-17 confirms this truth of Jesus Christ: “He is the image of the invisible God, the firstborn of all creation. For by Him all things were created, both in the heavens and on earth, visible and invisible, whether thrones or dominions or rulers or authorities— all things have been created through Him and for Him. He is before all things, and in Him all things hold together.” With this, Barkley addresses the question of greater significance. A scientific mindset might lead us to search for worth in our function, but Barkley says this is a mistake. In reality, he says, we were created not just for a function, but for a person. That person is Jesus Christ, the perfect image of the Triune God. Ultimately, Barkley affirms that one could fathom all scientific knowledge and still not discover his or her own purpose, which flows only from a relationship with God through Jesus Christ.

Though some may believe that moving the science/faith dialogue forward is best left to scientists, scholars, and theologians, we at BioLogos recognize that our pastors play an invaluable role in the conversation. Across the globe, pastors are helping their congregations work through difficult issues of science and faith with honesty, insight, and a gentle spirit. To this end we present an ongoing series recognizing sermons (and the pastors who give them) that are helping to promote the harmony of science and faith.

Pete Shaw, who is the senior pastor of Crosswalk Community Church in Napa California, offers a brief history of the interactions between science and faith in the first segment of his sermon “The Flood. ” In this excerpt, he explains how the Church adopted Enlightenment thinking and advocated the scientific method as a way to verify God’s created order in nature. However, as science became more sophisticated, scientists began to question whether or not God intertwined with the natural world or even existed. In other words, they were asking the Church, ‘How can you prove God scientifically?’ Although the Church identified God as the first cause that led to all other causes in creation, scientists remained skeptical. At this, “the Church retreated, not recognizing that maybe they needed to change their perspective or widen their understanding of how we define what is true and what isn’t--beyond the scope of science.” Pastor Shaw appropriately concludes with this challenge: be willing to acknowledge the lens through which you see the world and be willing to be grown by God. The full sermon can be downloaded here. Finally, if you know a sermon or podcast related to science and faith that has especially spoken to you, please let us know.

One of the primary things that I am trying to bring to your attention is that in our present day, we have a certain proclivity toward how we approach the Bible, and it is a post-Enlightenment perspective, which means that when we look at just about anything in our world, when we read anything in our world, we read it as if it was literal historical fact: ‘it is true if it is verifiable.’ And we adopted that mindset—you didn’t vote on this—but our forefathers in the church adopted this mindset in the 17th century when Enlightenment started to come into play. The Church initially saw Enlightenment as a wonderful ‘brother in crime,’ so to speak, because Enlightenment was starting to come up with great scientific discoveries which were pointing to organization in the created world, and things developed in a very orderly way. Things could be proven that they turned out a certain way, and immediately, the Church Fathers looked at that and said, ‘that’s great news for the Church because science is proving that God exists.’ So, for 150 years, 125 years, we rode in that cart together, but science is indiscriminate in terms of how it approaches whatever its subject is—it doesn’t care about what subject it addresses.

So, when it came to God, science was starting to wonder if we need God at all, and was curious since they were figuring out so much about the created order and how things worked together and the explanation of so many things—they were taking mythology out of a lot of things, and so they were asking the Church: ‘how can you prove God?’ By this time, the Church had already adopted the scientific method saying, ‘It’s only true if you can prove it.’ And so, they were left with this question of how do you prove God scientifically? And the best thing that they could come up with was what is called the first cause, which simply means that science can identify that something happened to get this whole creation thing going, and the Church rallied and said ‘Yes! That something is God—God is the first cause that started all the other causes since, and he has been involved in the process.’ But science came back and said, ‘you know, just the fact that we don’t really know that doesn’t prove that you are right.’ So, the Church retreated, not recognizing that maybe they needed to change their perspective or widen their understanding of how we define what is true and what isn’t--beyond the scope of science. We held to our guns, and that has been the predominant voice in American Christian culture for the last 200 years or so—so strong, in fact, that a lot of what I have been sharing with you in last couple weeks seems incredibly new and disturbing. You may be wondering, ‘Where did this guy come up with this stuff?’ Well, the fact is that I am not really giving you anything new, I am giving you stuff that is very, very old. Because what I have recognized (because I have researched this stuff) is that the greats of our faith who lived centuries ago, when they looked at this book [the Bible], they looked at it very, very differently than we do, and they have something to say. So greats in the early Church like Origen, you know…names that you kind of remember from history class…St. Augustine, these kinds. Some of the Catholic greats that we know of through history, they had something to say, and all of what they said happened long before the Enlightenment when the Church decided to define what is true extremely narrowly.

So, my challenge to you is: can you, in a way, come to grips with the fact that your worldview, your vision, has been shaped significantly by the time you’ve grown up in and by the world in which we live? I am telling you it has, and I am also stating with great confidence that until we identify how the lens has been crafted through which we see everything, we are trapped and bound by it. In fact, we are shackled by it. Until we can see ourselves for who we are, understand our biases and how they shape everything we think about, those things keep us where we are, and we literally will not be able to hear anything new because it just won’t fit—that is a real problem when it comes to walking with God because God is continually wanting to grow us and stretch us in new directions, and if we don’t have room for that, we really don’t have room for God.”

As part of the H. Orton Wiley Lecture series in Theology on the campus of Point Loma Nazarene University, Reverend Dr. John Polkinghorne inspired students and faculty alike in thinking about the interaction between science and the Christian faith. The first lecture, entitled, Natural Theology, was delivered on November 15th, 2010. The entire MP3 is available for download here.

In Part 2 of this series, Dr. Polkinghorne looked at the first of two meta-questions. In today’s post, he looks at the second of these meta-questions: “Why is the universe so special?”

We provide a written transcript of the talk to make it easier to mull over Dr. Polkinghorne’s ideas while you listen.

Fine-tuning and the “Fruitful Universe”

Now my second meta-question is a little bit more specific. I ask the question, “Why is the universe so special?” Now scientists don’t like things to be special; we like things to be general, and our natural anticipation would have been that the universe is just a common or garden specimen of what a universe might be like.

But we’ve come to understand a lot about the history of the universe. We know that our universe started 13.7 billion years ago, and it started extremely simple, just an almost uniformly expanding ball of energy, about the simplest physical system you could possibly think about. But a world that started so simple has of course become rich and complex. With you and me, in fact, the most remarkable and complex consequences are its history, at least of which we are aware. The human brain is far and away the most complicated physical system we have ever encountered anywhere in our exploration of the universe.

That fact itself might suggest that something has been going on in cosmic history rather than just one thing after another. But we’ve also come to understand many of the processes by which this rich fruitfulness has come to birth. As we’ve come to understand these, we’ve come to see that though these processes are of course evolving processes, they took long periods of time – the universe was 10 billion years old before any form of life appeared in it, at least as far as we know anyway – and life of our complexity only appeared yesterday.

Nevertheless, the universe is pregnant with life, pregnant with the possibility of life, essentially from the beginning onwards. By which I mean the given laws of nature had to take a very specific, very finely tuned form, if the universe was to have so fruitful a history.

That’s a very remarkable discovery, and let me give you some examples of why we believe that. If you’re going to have a fruitful universe, one of the first things you have to get right is that you have to have the right stars in the universe. The stars are going to have a very important role to play. First of all, you must have some stars that are going to be very long lived, live for billions of years, steadily burning, steadily producing energy which will enable the development of life on one of the encircling planets. We understand what makes stars burn in that sort of way very well, and it depends on a delicate balance between the strength of gravity and the strength of electromagnetism. Electromagnetism is the force that holds matter together. The seats on which you are sitting are held together by electromagnetism and in fact you are held together by electromagnetism.

If you alter that balance a little bit in one direction the stars will begin to burn intensely, furiously, just pouring out energy and they will only live a few million years rather than a few billion years. If you move it a little bit in the other direction they will burn so slowly they will be brown stars and they will not produce enough energy to fuel the development of life. So you have to have a very delicate finely tuned balance between the strength of gravity and the strength of electromagnetic forces in a fruitful universe.

Remember, science takes the laws of nature, takes the given strengths of gravity, the given strength of electromagnetism, uses that to explain processes in the world, how things happen, but it doesn’t explain where those laws of nature come from. They are just brute facts as far as science is concerned.

And the stars have another absolutely indispensible role to play. The stars are the place where the heavier elements essential for life are made in the interior nuclear furnaces. There are many elements that are necessary for life, of which carbon is perhaps the most essential. Carbon is the basis of the long chain molecules, which are the biochemical basis of life. The early universe only makes the simplest elements; it makes hydrogen and helium and it makes no carbon at all. Carbon only begins to be made when the universe, which started uniform, begins to condense and become lumpy and grainy with stars and galaxies. As the stars condense they heat up, nuclear processes begin again in their interiors. And it’s those nuclear processes in the stars that make carbon and the heavier elements. Every atom of carbon in your body was once inside a star. We are people of stardust made in the ashes of dead stars.

And that’s a very beautiful process that takes place in that sort of way. And one of the great triumphs of astrophysics and the second half of the 20th century was to unravel that process. One of the people who did some of the most important work on that was a senior colleague of mine in Cambridge called Fred Hoyle. And they were trying to figure out how to make carbon. They got helium, and if you can make three helium nuclei stick together that will produce carbon, but when you have something as small as a nucleus it is impossible to get three to stick together at one time, they’re just too small.

Ok, so let’s do it step by step. Stick two together gives you berylium. Helium 4 gives you beryllium-8, hope it stays around for a bit, another helium comes along, attaches itself, and bingo, you’ve got carbon-12. That’s the obvious thing to think about but it doesn’t work in the obvious way, and the reason it doesn’t work in the obvious way is that beryllium-8 is terribly unstable. It doesn’t oblige you by staying around long enough to catch that third helium, at least in an ordinary, straightforward way.

But Fred realized that it would be just possible for this to happen if there was a very large enhancement effect, in the trade we call it resonance, occurring in carbon at just the right energy, it has to be the right energy, which would enable that attachment process to catch that third helium much much more quickly that you might have thought, in fact so quickly that some of them would get caught before the beryllium-8 disappeared. It was a very good idea, and he must have felt pretty pleased with himself and he went off to just check in the nuclear data tables of this particular resonance’s energy levels, and it wasn’t in the tables, but he knew it must be there, he’s carbon based life like you and me.

So he rang up some friends in the States, a father and son team who were good experimentalists and he said, “Look, you missed something. There’s a resonance and energy level in carbon that you haven’t spotted, and I’ll tell you exactly where to look for it. I know exactly where this energy has got to be. You go look for it.” And they said, “No, no, we don’t want to do that, we have more interesting things to do.” But Fred was very determined and he bullied them into looking for it and they found it.

Now that’s a wonderful achievement, to predict an energy level in carbon on the basis of how it might have been made in the stars is a fantastic scientific achievement. But it’s more than that. Fred had a lifetime conviction of atheism, realized of course that if the laws of physics had been just a little bit different that resonance wouldn’t have been there, and the possibility of carbon-based life is too significant for it just to be a happy accident in his view, so he says in a Yorkshire accent that is beyond my power to imitate, he said that the universe is a put-up job. Fred didn’t like the word God, and so he said some Intelligent, capital “I” Intelligence, must have monkied with the laws of nature to make carbon production possible. What that could possibly be I don’t know, but the more sensible thing to say is that creation is ordained, that the laws of nature would be such, as to enable the fruitfulness of carbon-based life.

We’ll come back to evaluating that possibility in a minute, but before we do, let me give you two other examples of how specific, how special, our universe has to be for us to be able to be here today to think about. We live in a universe that is immensely big, beyond our powers to imagine really. There are a hundred thousand million stars in our galaxy in the Milky Way, of which our sun is just a common or garden specimen, and there are about a hundred thousand million galaxies in the observable universe, of which our Milky Way is a pretty common or garden specimen. So we live in a world that is unimaginably vast, and sometimes we might feel upset by that and think, “What could be the significance of us who are simply inhabitants of a speck of cosmic dust, as you might say, in this vast, vast universe?”

Nevertheless, if all those stars were not there, we would not be here to be upset at the thought of them. Because there is a direct connection between how big a universe is and how long it lasts, and a universe that is significantly smaller than our universe would not have been able to last the 14 billion years, which is the necessary time to produce beings of our complexity. So that’s another condition of the world that has to be right for human beings, or something like human beings, to be a possibility.

One final example, which is the finest tuning of all: quantum theory suggests that there should be an energy attached to space itself. In quantum theory the vacuum, so called empty space, is not just a void. There are things called vacuum fluctuations which occur in a continual sort of seething mass of things coming into being and going out of being all the time. So while there is nothing there that doesn’t mean there is nothing happening. That may sound strange and paradoxical but believe me that’s what quantum theory implies. And of course these happenings, these fluctuations, generate a certain amount of energy, we call it “zero point energy”, and that energy is spread out over the whole of space. So we expect there to be energy associated with space.

And just recently the astronomers have discovered something called dark energy which is driving the expansion of the universe, which is just such an energy associated with space. Well that’s very good, you might say. However, when we estimate, just from thinking about quantum theory, how much energy there should be in space it turns out to be a fantastically large amount, and when we see the amount of energy there actually is per volume in space, it turns out to be very, very small in relation to that expected size. In fact, it turns out to be smaller by a factor of 10^-120. That means by a factor of 1 over 1 followed by 120 zeros. You don’t have to be a great mathematician to see that’s a fantastically small number. So some fantastic cancellation has taken place to turn that big number into the tiny number that we actually observe, and if it hadn’t taken place we wouldn’t be here to observe it because significantly higher energy would simply have blown the whole show apart too fast for anything interesting to happen. That’s the finest tuning that we know in the universe: one part in 10¹²⁰.

So we live in a world that is very remarkably finely tuned, and we have to consider that. And all scientists would agree about what I have been telling you; this is non-contentious. Where the contention comes in is what we might make of that, what is the further significance of it.