What do you need in order to have a planet that supports complex life? First, you need liquid water at the surface of the planet. But there is only a narrow range of temperatures that can support liquid water. It turns out that the size of the star that your planet orbits around has a lot to do with whether you get liquid water or not. A heavy, metal-rich star allows you to have a habitable planet far enough from the star so the planet can support liquid water on the planet’s surface while still being able to spin on its axis. The zone where a planet can have liquid water at the surface is called the circumstellar habitable zone (CHZ). A metal-rich star like our Sun is very massive, which moves the habitable zone out further away from the star. If our star were smaller, we would have to orbit much closer to the star in order to have liquid water at the surface. Unfortunately, if you go too close to the star, then your planet becomes tidally locked, like the moon is tidally locked to Earth. Tidally locked planets are inhospitable to life.
Circumstellar Habitable Zone
Here, watch a clip from The Privileged Planet: (Clip 4 of 12, full playlist here)
But there’s more.
The Galactic Habitable Zone (GHZ)
So, where do you get the heavy elements you need for your heavy metal-rich star?
You have to get the heavy elements for your star from supernova explosions – explosions that occur when certain types of stars die. That’s where heavy elements come from. But you can’t be TOO CLOSE to the dying stars, because you will get hit by nasty radiation and explosions. So to get the heavy elements from the dying stars, your solar system needs to be in the galactic habitable zone (GHZ) – the zone where you can pickup the heavy elements you need but not get hit by radiation and explosions. The GHZ lies between the spiral arms of a spiral galaxy. Not only do you have to be in between the arms of the spiral galaxy, but you also cannot be too close to the center of the galaxy. The center of the galaxy is too dense and you will get hit with massive radiation that will break down your life chemistry. But you also can’t be too far from the center, because you won’t get enough heavy elements because there are fewer dying stars the further out you go. You need to be in between the spiral arms, a medium distance from the center of the galaxy.
Like this:
Galactic Habitable Zone and Solar Habitable Zone
Here, watch a clip from The Privileged Planet: (Clip 10 of 12, full playlist here)
The GHZ is based on a discovery made by astronomer Guillermo Gonzalez, which made the front cover of Scientific American in 2001. That’s right, the cover of Scientific American. I actually stole the image above of the GHZ and CHZ (aka solar habitable zone) from his Scientific American article (linked above).
These are just a few of the things you need in order to get a planet that supports life.
Here are a few of the more well-known ones:
a solar system with a single massive Sun than can serve as a long-lived, stable source of energy
a terrestrial planet (non-gaseous)
the planet must be the right distance from the sun in order to preserve liquid water at the surface – if it’s too close, the water is burnt off in a runaway greenhouse effect, if it’s too far, the water is permanently frozen in a runaway glaciation
the solar system must be placed at the right place in the galaxy – not too near dangerous radiation, but close enough to other stars to be able to absorb heavy elements after neighboring stars die
a moon of sufficient mass to stabilize the tilt of the planet’s rotation
plate tectonics
an oxygen-rich atmosphere
a sweeper planet to deflect comets, etc.
planetary neighbors must have non-eccentric orbits
By the way, you can watch a lecture with Guillermo Gonzalez explaining his ideas further. This lecture was delivered at UC Davis in 2007. That link has a link to the playlist of the lecture, a bio of the speaker, and a summary of all the topics he discussed in the lecture. An excellent place to learn the requirements for a suitable habitat for life.
Jay Richards, Ph.D., is a Senior Fellow of the Discovery Institute where he directs the Center on Wealth, Poverty and Morality, and is a Visiting Scholar at the Institute for Faith, Work & Economics. Most recently he is the co-author with James Robison of the best-selling Indivisible: Restoring Faith, Family, and Freedom Before It’s Too Late”.
In addition to writing many academic articles, books, and popular essays on a wide variety of subjects, he recently edited the new award winning anthology, God & Evolution: Protestants, Catholics and Jews Explore Darwin’s Challenge to Faith . His previous book was Money, Greed, and God: Why Capitalism Is the Solution and Not the Problem (HarperOne, May 2009), for which he received a Templeton Enterprise Award in 2010.
[…]In recent years, he has been a Contributing Editor of The American at the American Enterprise Institute, a Visiting Fellow at the Heritage Foundation, and a Research Fellow and Director of Acton Media at the Acton Institute. Richards has a B.A. with majors in Political Science and Religion, an M.Div. (Master of Divinity) and a Th.M. (Master of Theology), and a Ph.D. (with honors) in philosophy and theology from Princeton Theological Seminary.
Jim Wallis:
Jim Wallis (born June 4, 1948) is a Christian writer and political activist. He is best known as the founder and editor of Sojourners magazine and as the founder of the Washington, D.C.-based Christian community of the same name. Wallis is well known for his advocacy on issues of peace and social justice. Although Wallis actively eschews political labels, he describes himself as an evangelical and is often associated with the evangelical left and the wider Christian left. He works as a spiritual advisor to President Barack Obama. He is married to the Rev. Joy Carroll, who was one of the first female priests in the Church of England. He is also a leader in the Red-Letter Christian movement.
[…]In 2010, Wallis admitted to accepting money for Sojourners from philanthropist George Soros after initially denying having done so. When conservative writer Marvin Olasky pointed this out, and that Soros also financed groups supporting abortion, atheism, and same-sex marriage, in a WORLD magazine column, Wallis said Olasky “lies for a living”; he subsequently apologized to Olasky for the comments. In 2011, Wallis acknowledged that Sojourners had received another $150,000.00 from Soros’ Open Society Foundation.
[…]In regard to the 2011 United States budget proposal, Wallis described Congressman Paul Ryan and his congressional allies as “bullies” and “hypocrites.”
Wallis just came out this month in favor of gay marriage. He is also a strong supporter of Barack Obama, who is radically pro-abortion. Some pro-lifers have argued that Barack Obama has the same views on abortion as Kermit Gosnell.
The format of the debate
20 minute opening speeches
10 minute rebuttals
10 minutes of discussion
Q&A for the remainder
SUMMARY
I use italics below to denote my own observations.
Jim Wallis’ opening speech:
My goal is to spark a national conversation on the “common good”.
A story about my son who plays baseball.
The central goal of Christianity is to promote the “common good”.
Quotes “Catholic social teaching” which values “human flourishing”.
The “common good” is “human flourishing”.
Is the purpose of Christianity is to make sure that everyone has enough material stuff or to preach the gospel?
When Christians go on mission trips, it’s good that they focus on things like human trafficking.
Democrat John Lewis is the “conscience of the U.S. Congress”.
John Lewis gets a 0% rating from the American Conservative Union in 2012.
John Lewis gets a 8% rating from the American Conservative Union in 2011.
John Lewis gets a 2.29% lifetime rating from the American Conservative Union.
Nothing is going well in Washington right now except comprehensive immigration reform.
Does he think that Christianity means giving 12-20 million illegal immigrants a path to citizenship, while skilled engineers cannot even get green cards, even though there is a shortage of them? Does he think that the other people in society who earn more than they receive from the government ought to be taxed more in order to provide more services and benefits to those who earn less than they take from the government?
Jay Richards’ opening speech:
Two topics: 1) what is the common good? 2) what should Christians do to promote the common good?
Catholicism defines the “common good” as “Indeed, the common good embraces the sum of those conditions of the social life whereby men, families and associations more adequately and readily may attain their own perfection.”
We have natural ends that we are supposed to be achieving and some places, like South Korea, are better for allowing that to happen.
The common good is broader and prior to any sort of political specification.
It’s not the political good or what the state is supposed to do.
It’s not about the communal good, as in Soviet Russia, where the communal good was above individual and familial good.
The common good is the social conditions that promote the things that we humans have in common as individuals and members of family.
The common good takes account of who we are as individuals and in associations with other individuals, e.g. – families.
Christians don’t have to be doing the same things to promote the common good, e.g. – pastors, entrepreneurs, etc.
The church, as the church, has as its primary goal making disciples of all nations.
But even in that capacity, the church should be interested in more than just conversions and saving souls.
We also have to care about God’s created reality including things like physics, education, etc.
How should Christians promote the common good in politics?
Question: when is coercion warranted?
In Romans 13, Paul says that the state does have power to coerce to achieve certain ends, like justice.
Most Christians think that there are some things where the state can use coercion, for example, to prevent/punish murder.
It is OK for the police to use coercive force to maintain public order and the rule of law.
But we need to ask whether other things are legitimate areas for the state to use coercive force.
We should only give the state power to coerce when there is no other way to achieve a goal.
We need to leverage the science of economics in order to know how to achieve the common good.
Jay Richards’ main point in the debate
Henry Hazlitt: “The art of economics consists in looking not merely at the immediate but at the longer effects of any act or policy; it consists in tracing the consequences of that policy not merely for one group but for all groups.”
For example, what happens if we raise the federal minimum wage to $50. What happens next for all groups? That’s what we need to ask in order to know which policies achieve the common good.
When it comes to economics a lot of things have been tried in other places and times.
We can know what works and doesn’t work by studying what was tried before and in other places.
Many things are counter-intuitive – things that sound good don’t work, things that sound bad do work.
Principle: “We are our brother’s keeper”. Christians have an obligation to care for their neighbors.
We all agree on the goal. But how do we do things that will achieve that goal?
We have to distinguish aspirations from principles and prudential judgment.
Principle: We should provide for the material needs of the poor.
Prudence: Seeing the world as it is, and acting accordingly.
Example policies: which minimum wage is best? None? $10? $20?
We decide based on seeing how different economic policies achieve the goal of helping the poor.
Jim Wallis’ first rebuttal:
Jesus commanded us to “care for the poor and help to end poverty”.
Actually, Jesus thought that acknowledging him and giving him sacrificial worship was more important than giving money to the poor, see Matthew 26:6-13:
6 While Jesus was in Bethany in the home of Simon the Leper,
7 a woman came to him with an alabaster jar of very expensive perfume, which she poured on his head as he was reclining at the table.
8 When the disciples saw this, they were indignant. “Why this waste?” they asked.
9 “This perfume could have been sold at a high price and the money given to the poor.”
10 Aware of this, Jesus said to them, “Why are you bothering this woman? She has done a beautiful thing to me.
11 The poor you will always have with you, but you will not always have me.
12 When she poured this perfume on my body, she did it to prepare me for burial.
13 Truly I tell you, wherever this gospel is preached throughout the world, what she has done will also be told, in memory of her.”
It’s not clear to me whether Jim Wallis thinks that preaching is more important than redistributing wealth to address material inequality.
I like what Jesus said in a TV series, even though it’s not in the Bible when an actor playing Jesus said to “change the world”.
Jesus never said to “change the world” in the Bible. Should we be concerned that he is quoting a TV actor playing Jesus instead of Jesus.
Here is a terrific story about Bill Bright.
I love Catholic social teaching.
Quote: “All are responsible for all”.
I go to the World Economic Forum at Davos, Switzerland every year. I spoke once at 7 AM on the 4th floor.
It’s a funny place for a Christian to be if they care about the poor – rubbing shoulders with leftist elites. He must have named a dozen high-profile people that he spoke with during the debate, as if he could win the debate by some sort of argument from name-dropping. He mentioned the Davos thing several times!
The greatest beneficiary of government actions to deal with the economic crisis was Wall Street banks.
I’m going to tell you a story about what a Washington lawyer says to Jesus.
I’ve had conversations with business leaders where I tell them to integrate moral truths.
I talk about the Good Samaritan parable.
Quote: “Do you love your undocumented neighbor?”
Quote: “Do you love your Muslim neighbor?”
Jay Richards’ first rebuttal:
Who is responsible for your own children? Who knows the most about them?
Parents should have more discretion over their children because they have more knowledge about their child and what’s best for them.
The Good Samaritan doesn’t show that government should confiscate wealth through taxation and redistribute it.
The Good Samaritan emphasizes voluntarily charity to help people who are not necessarily your immediate neighbor.
Some of the things we do should be for the good of other people in other countries.
But then we are back to leveraging economics to know what policies are good for those other people in other countries.
The principle of subsidiarity: if a problem can be addressed by a lower level of society (family) then we shouldn’t make higher levels (government) address it.
The best place to take care of children is within the family.
Only if the family fails should wider and wider spheres get involved.
Although we want to think of the common good in a global sense, we don’t want to lose sight of the fact
The financial crisis: we need to integrate moral truths, but also economic truths.
We don’t want to assume policies based on intuitions, we want to check our intuitions using economic principles.
Why did we have a financial crisis in mortgages, but not in commodities futures or technology, etc.?
Greed is a contributing factor in all areas of business.
Something more was going on in the mortgage markets than just greed.
There were specific policies that caused the mortgage lending crisis.
The root cause of the problem were “affordable housing policies” that lowered lending restrictions on low income people.
The policy ended up degrading the underwriting standards on loans.
Government intruded into the market and undermined the normal ways of
People were getting massive loans with no income, no jobs, no assets and no down payment.
The federal government created a market for risk loans by guaranteeing
There was a government imposed quota on mortgage lenders such that 50% of their loans had to be given to high-risk borrowers.
That is what led to the financial crisis. Not the free market, but intrusions into the free market.
These policies were well-meaning and implemented by people from both parties. But they had bad effects.
The Michael Medved show is a national radio show broadcast out of Seattle, Washington. According to Talkers magazine, he has the fifth largest radio audience. He has a regular weekly segment on science and culture featuring scholars from the Discovery Institute.
Here is the segment from this past week, courtesy of the Intelligent Design: The Future podcast.
On this episode of ID the Future, Dr. Jay Richards appears on the Michael Medved Show to discuss the meaning of academic freedom and the importance of teaching both sides of debated issues. Listen in as Richards and Medved look at intimidation in academia and the current efforts to censor Professor Eric Hedin at Ball State University.
URGENT: Please consider signing our petition to defend the academic freedom of Professor Eric Hedin. To sign, visit www.academicfreedompetition.com.
Each week, leading fellows from Discovery Institute will join Michael Medved to talk about the intersection of science and culture. Listen in live online or on your local Medved station, or stay tuned at ID the Future for the weekly podcast.
Topics:
Medved: Why is a group of activists trying to challenge the hiring of Guillermo Gonzalez at Ball State University?
Richards: When Guillermo was at Iowa State University, he was the best or second-best published assistant professor
Richards: A rabid atheist professor of religion blocked his tenure because of his views on intelligent design
Richards: Guillermo never mentioned intelligent design in class
Richards: Militant Darwinian fundamentalist Jerry Coyne is trying to block Ball State from hiring Guillermo
Medved: Eric Hedin, another professor at Ball State, is facing persecution for teaching both sides of evolution
Medved: Tell us about the book “The Privileged Planet” that got him into trouble
Richards: The book is about how the progress of science shows that habitable planets have to be fine-tuned
Richards: The book argues that there is a correlation between habitability and the ability to make scientific discoveries
Medved: Your book “Money Greed and God” talks about materialism has impacted economics as well
Richards: It’s problematic to assume materialism when studying economics and neglect human creativity
Medved: Why don’t intelligent design people just focus on religion, instead of trying to get into the science classroom?
Richards: Darwin himself was trying to argue against design, so the evidence for design is part of the debate
Caller1: There are many galaxies, solar systems and planets in the universe, so the odds are good of getting life by chance
Richards: There are 10 to the 22 stars in the visible so we have an idea of the probabilistic resources available
Richards: There are a lot of things that you need to get right in order to support life – the odds are less than 10 to the 22
Caller1: Why can’t just teach about astrophysics and astrobiology in a religion or history class?
Richards: Because the evidence for design is found in things like bacterial flagellums and the origin of life
Richards: Since evidence for design is scientific, it makes no sense to talk about it in a history or religion class
Caller2: Intelligent design argues that we are too complicated, but then the Designer must be even more complicated
Richards: Consider a situation where a murder has been committed, but the murder suspect has fled the country
Richards: Are we not allowed to infer that an agent murdered the victim if we can’t produce the murderer?
Caller2: But inferring that an intelligence is the cause of some effect means that you stop asking questions
Medved: Why is it so hard for you to accept
Caller2: I’m an atheist and I like the Big Bang theory, and it explains where matter came from
Medved: The Big Bang theory explains the origin of space and time from nothing: that’s not atheism, that’s theism
Caller3: Intelligent design theory is nothing but a fear of randomness in the universe
Richards: The arguments for intelligent design are based on discoveries abut the origin of life or the Cambrian explosion
Richards: The real question is whether materialistic mechanisms and random chance can explain the evidence
Caller4: Explain your idea that habitability is corelated with the ability to make discoveries
Richards: Example: in order to have perfect solar eclipses, the masses of the Sun, moon and planet have to be fine-tuned
Richards: Example: life-permitting atmosphere is also a transparent atmosphere, so we can see past it to make discoveries
Richards: Example: galactic habitable zone is also the best place to do astronomy and make discoveries
By the way, there was a troubling update about the Darwish Inquisition against Eric Hedin – it looks like the panel of investigators is stacked with close-minded naturalists.
I subscribe to the ID the Future podcast, and I really recommend that you do as well!
WINTERY KNIGHT 