Goldilocks Zone Archives - DOES GOD EXIST? TODAY

July 22, 2024September 5, 2024

Solar Storm Affected Mars

A massive solar storm affected Mars on May 20, 2024, shortly after it caused impressive auroras on Earth. This latest storm is part of the normal eleven-year cycle of solar maximums, but it is the first time such a storm has occurred while astronomers have the equipment to record its effect.

Xrays and gamma rays, which travel at the speed of light, reached Mars first and were followed minutes later by charged particles. According to NASA, the Curiosity rover at Gale Crater near the Martian equator took pictures showing white streaks resembling snow but were actually charged particles. The radiation from the solar particles was so intense that the star camera aboard the Mars Odyssey orbiter temporarily shut down.

Curiosity rover’s measurements of the radiation reaching Mars’ surface show that an astronaut standing next to the detector would get radiation equal to 30 chest X-rays. Earth has a strong magnetic field to shield it from energized solar particles, but Mars does not. At the same time, the thin Martian atmosphere could not give protection as the solar storm affected Mars.

Planets with a functional atmosphere and located in the Goldilocks Zone, where liquid water on the surface is possible, are rare. All stars go through cycles that pose threats to life on their orbital planets. Mars, a potential target for human visitation and a place where people speculated that life might exist, has received significant attention. This new data from a common solar event suggests that conditions for life to exist are even more challenging than previously thought.

The fact that a solar storm affected Mars is important. It tells us that Earth’s creation and the life on it are the product of intelligence and design, not opportunistic chance. They also tell us we must take care of the Earth because, in reality, there is no other place to go if we mess up this planet.

Reference: CNN Reports on Space Science for June 14, 2024.

July 8, 2024July 7, 2024

Just Right for Life to Exist

Since astronomers have discovered more than 5,000 exoplanets orbiting stars other than our Sun, many insist there must be life elsewhere in the cosmos. For those of us who believe in God, that isn’t really an issue. If there is life out there, God created it, but the Bible only speaks to our planet. However, the evidence is growing that our planet is more unique than most people realize. A “Goldilocks” planet is at the proper distance from its star so that the temperature is “just right” for liquid water to exist on the surface. Some exoplanets appear to be in the habitable zones of their stars, but many other factors must also be just right for life to exist there.

Most known exoplanets are like Jupiter, having no terrestrial surface. To support life, a planet must be the right size, have a stable orbit inside the habitable zone of a stable star, and have the right atmosphere. It must also have working plate tectonics and a large moon to maintain a stable axis tilt. To be just right for life to exist, a planet must also be in the habitable zone of its galaxy – not near the center, exposing it to lethal gamma-ray bursts.

Our Sun is a G spectral star, but only 9% of the stars in our galaxy are that type. M-class dwarf stars are the most common and long-lived stars, but they emit large amounts of radiation that would cook any life on their planets. Also, planets around such a star would become tidal-locked, with one side facing the star being excessively hot while the other remains cold.

Another star system requirement for life would be having outer planets large enough and in the correct position to sweep away asteroids and comets that would bombard an inner planet. To support life, a planet also needs a strong magnetic field to shield the surface from the star’s radiation and cosmic rays.

Our Earth is just right for life to exist. We are defining life as the biology books do: being able to move, breathe, respond to outside stimuli, and reproduce. Any conjecture about fire people or rock people is in science fiction – not scientific fact. The bottom line is that Earth is a special place created by God for a special purpose and is unique among all other objects in the cosmos.

Reference: “Is Earth the Only Goldilocks Panet?” in Discover magazine, July/August 2024, pages 54 -57.

June 19, 2023June 18, 2023

The Cosmological Argument for God

Cosmology provides strong evidence for God’s existence. The basic cosmological argument for God involves three simple questions:

1) Was there a beginning to time, space, and matter/energy? The evidence says there was.

2) Was the beginning caused or uncaused? Taking the position it was uncaused violates scientific conservation laws.

3) If it was caused, what or who was the causer? The evidence is that the cause can not be blind, mechanistic chance. Logic suggests that the cause was an intelligence, in other words, God.

As more data becomes available to support intelligence as the cause of planet Earth, the cosmological argument for God becomes stronger. If we define life as that which can breathe, move, respond to outside stimuli, and reproduce, what is necessary for life to exist? Astronomers now talk about the habitable zone (HZ) of stars. This is the zone around stars where the temperature on a planet would allow water to exist in the liquid state on the surface.

Recent discoveries have shown that M-class dwarf stars are the most common and longest-lived stars. The problem with these stars is that their HZ is very close to the star, so tidal forces would lock the rotation of any planet so its same side would always face the parent star. One side of the planet would be constantly hot while the other would be cold. Also, M-class stars would bombard these planets with stellar flares causing massive radiation levels that would eliminate any possibility of life. Other star types create various problems for a life-supporting planet.

Astronomers have determined there is a galactic habitable zone (GHZ) in addition to the star’s habitable zone. A star must be far from the galactic center to have a planet with life on it. The high star density near the core of a galaxy exposes the star system to deadly supernovae and gamma-ray bursts. Mass distribution within a galaxy is also an issue because, near the galaxy’s core, mass concentrations cause gravitational instability.

The basic cosmological argument for God is now supported by a vast number of parameters that must be within precise limits to allow life to exist in a planetary system. Having a large moon is essential to the survival of life on a planet. Likewise, having a shield against incoming cosmic bodies is critical. A body the size of Comet Hale Bopp hitting planet Earth would have sterilized it, killing even microbes that might be present. The Earth’s shield is the arrangement of the Jovian planets. Jupiter, Saturn, Uranus, and Neptune preventing objects like Hale Bopp from reaching Earth.

The more we look at the cosmos, the unique qualities of our planet reinforce the cosmological argument for God. Proverbs 8 personifies Wisdom speaking of God’s creative power and design. As we learn more about the cosmos, the stronger the evidence becomes that “in the beginning God created the heavens and the earth” (Genesis 1:1).

Reference: “Is Earth the Only Goldilocks Planet?” by Klaus R. Brasch in Astronomy Magazine for July 2023, pages 18-23.

February 6, 2023February 5, 2023

The Uniqueness of Planet Earth

One of the positive things about science is that its methodology allows change. When new data become available, theories are either supported or discarded, resulting in the constant evolution of what scientists believe to be true. This applies to our understanding of the uniqueness of planet Earth.

Experts from NASA’s Goddard Space Flight Centre have announced that a widespread assumption about life on other planets is not valid. Science has assumed that other stars similar to our Sun in size and type also have similar stability. The Sun has not changed significantly in brightness and temperature in the hundreds of years that scientists have been observing and measuring it. Recent measurements of similar stars show that three-quarters of them go through changes in both brightness and temperature.

Dr. Noah Tuchow of NASA says that the number of alien worlds that could contain life has been “vastly overestimated.” The planetary zone where water could exist as a liquid is known as the “Goldilocks Zone.” A planet would have to be orbiting a star with relatively constant heat output to be in such a zone. Planets that formed too close to be in the star’s habitable zone would have their water boiled away. Those that began beyond the habitable zone would have frozen water that would take a long time to melt. Either way, they would have a relatively short time to support life. This shows the uniqueness of planet Earth.

NASA has created a new label for planets that enter the habitable zone after their formation due to orbiting a changing star. They call it the “Belatedly Habitable Zone” (BHZ). Dr. Tuchow says, “A planet’s history dictates its current potential to host habitable conditions and life.”

Our point is the uniqueness of planet Earth, not whether it is the only place where life exists. However, if life exists elsewhere, God created it. Every discovery scientists make shows that Earth is an extraordinary place and our Sun is an exceptional star. Considering what we have learned about the cosmos, the statement of Psalms 19:1 is more meaningful today than when it was written thousands of years ago: “The heavens declare the glory of God, and the sky shows His handiwork. Day to day they utter speech, and night to night they show knowledge.”

Please go to our doesgodexist.org website to see a chart titled “Evidence for Design in the Universe,” listing 47 of the vast number of variables required for a life-sustaining planet. The constancy of the parent’s star adds one more limiting variable to what it takes to have a world able to support life.

References: ARXIV and MSN.com

July 5, 2022July 4, 2022

What is the Aphelion?

Across the United States, on July 4, 2022, people celebrated the anniversary of our country in various ways. There were family picnics, parades, fireworks, and other events. However, most people did not realize that in addition to being the U.S. Independence Day, July 4 was also the day for aphelion this year. What is the aphelion?

Earth’s rotation around the Sun is not a perfect circle but slightly elliptical. When Earth is farthest away, that is called aphelion, and it occurred at 3 a.m. EDT (0700 GMT) on the fourth of July this year. At that time, Earth was separated from the Sun by 94.51 million miles (152.1 million km). We see this as another evidence of design in our planet. Aphelion always occurs in mid-summer. When Earth makes its closest approach to the Sun, astronomers call that perihelion. That happens in mid-winter, and the next time will be January 4, 2023, when Earth will be 5 million km closer to the Sun.

Why do we consider it a design feature that Earth and Sun are closest during the winter and farthest apart in the Summer? Look at a map or globe of Earth and notice that most of the land mass is in the Northern Hemisphere. The Southern Hemisphere is mostly water. Water absorbs and dissipates heat from the Sun much more efficiently than land does. In mid-summer, the temperature can, and does, become unbearably hot when the sunshine beats down on the land. It would be even hotter if the aphelion occurred at that time.

Of course, the summer and winter seasons are determined by the tilt of Earth’s axis, not distance from the Sun. However, distance plays a minor role in the concentration of the Sun’s rays on our planet. Our orbit around the Sun maintains Earth in the “Goldilocks Zone” within the temperature range where water can exist as a liquid. Summer and winter are tempered by the aphelion and perihelion to further stabilize our climate. That is an additional indication that our planet is well-designed for life. We don’t think it’s a coincidence, but evidence of a loving God.

February 29, 2020February 29, 2020

Solar System Design

The March 2020 issue of Scientific American (page 10-11) carried an interesting interview with well-known astronomer Dr. Mike Brown. One of the issues raised is the uniqueness of our solar system compared to other known planetary systems in the Milky Way galaxy. Astronomers have discovered thousands of extra-solar planets, and the evidence shows that our solar system design is not typical.

Dr. Brown points out that we are finding giant planets that are closer to their suns than our planet Mercury. We also find stars with eight very small planets that are also inside the orbital distance of Mercury. We don’t see a planet as small as Earth located as far from the parent star as we are anywhere else in the Milky Way. That makes the chances of having a planet in the “Goldilocks Zone” (where water could exist as a liquid) very low. It also means that the masses of the giant planets close to their parent stars must be enormous, and the speed of their orbits must be astronomical.

The process of solar system formation is subject to debate. However, the new observations make it difficult to find any explanation that works. The extra-solar discoveries just add more evidence to the fact that our solar system design is a unique product of engineering.

Proverbs 8 finds “Wisdom” speaking, and she says in verses 22-27, “The Lord possessed me in the beginning of His work before the Earth ever was … when he prepared the heavens, I was there.” The production of our planet was an incredible work of design, not an accident. That certainly urges us to care for what God has created.

February 17, 2020February 16, 2020

Drake Equation and Planet Civilizations

In the long history of looking for life elsewhere in the cosmos, one of the exciting discoveries has been learning the things a planet needs to support life. In 1961, American astronomer Frank Drake proposed what is called the Drake Equation. He was looking for a way to calculate the number of inhabited planets in our galaxy with which communication might be possible. Drake’s equation lists seven parameters that would determine the answer to that question. They are:

1) The rate of formation of stars in our galaxy.

2) The fraction of those stars with planetary systems.

3) The number of planets per solar system with an environment suitable for life.

4) The fraction of suitable planets on which life actually appears.

5) The fraction of life-bearing planets on which intelligent life emerges.

6) The fraction of civilizations that develop a technology that releases detectable signs of their existence into space.

7) The length of time such civilizations release detectable signals into space.

If you knew each of these probabilities, you could calculate how many planets in our galaxy might be inhabited by intelligent beings with whom we could communicate. Drake gave each of these parameters a number or probability, but they were wild guesses. Once you have the numbers, all you need to do is multiply each of these variables by each other.

Let me explain. What are the odds of drawing the ace of spaces from a card deck twice in a row back to back? The odds of drawing one ace of spades out of a full deck is 1 out of 52 since there are 52 cards in a deck. To calculate the odds of doing that twice in a row would be 1 out of 52 times one out of 52. You multiply the individual probabilities, so the total probability would be one out of 2704. If you knew the likelihood of each parameter in the Drake equation, multiplying them together would give you the theoretical odds that we could receive radio communication from intelligent life on another planet in our galaxy.

Going back to the card analogy, if you drew one time out of a deck of 52 cards, the odds would be one out of 52. If you drew the ace of spades 52 times in a row, the number would be astronomical since you would multiply the result 52 times! The problem with the Drake equation is that the parameters are unknown and are probably unknowable.

There are also variables that the Drake equation didn’t include, such as the type of star. For example, a supermassive star will have a very short life expectancy. Researchers at Rice University reported in January of 2020 that many stars have extended magnetic fields which overlap the Goldilocks zones of most exoplanets. (As we have explained before, we say that a planet is in the Goldilocks zone when it can contain water in the liquid state). These strong magnetic fields will strip away any atmosphere the planet might have. Our Sun has a magnetic field, but it is not strong enough to strip electrons from atoms and molecules in the Goldilocks zone where Earth is located.

More variables regularly show up, and they tell us that our solar system and Sun have been carefully designed and formatted so that we can exist. Psalms 1:19 continues to take on new meaning with every discovery we make in space. “The heavens (do) declare the glory of God, and the firmament (does) show His handiwork.”

Reference: Astronomy magazine March 2020, page 9.

Frank Drake was involved in the founding of the Search for Extraterrestrial Intelligence (SETI), which we have discussed previously HERE and HERE and HERE.

February 1, 2020January 31, 2020

Stars and Habitable Zones

The more scientists study Earth and other objects that surround us in space, the more variables we realize must be carefully controlled for life to exist. Many times before, in our posts, our videos, our books, and our printed quarterly, we have discussed the growing list of parameters that must be carefully chosen. NASA posted a graphic of different kinds of stars in the cosmos and whether they could support life. This picture of stars and habitable zones adds to our understanding of the unique qualities of our Sun.

Water is essential for life. Science defines life as having properties such as moving, breathing, eating, reproducing, and responding to outside stimuli. We don’t discuss “rock people” or “gas people” because they don’t fit that definition. For that reason, scientists are interested in stars and habitable zones–the just-right “Goldilocks zone” surrounding a star where water can exist as a liquid.

In their daily posting on apod.nasa.gov for January 31, 2020, NASA gives the distribution of Goldilocks zones for G spectral stars like our Sun, which are yellow, K dwarf stars, which are orange, and M stars, which are red. The other spectral groupings, such as blue stars, are not considered because of their high radiation levels and activity, which would make life impossible.

The most common type of star in our galaxy, making up 73% of all stars in the Milky Way, are M stars. These red stars have very active magnetic fields and massive radiation. Their Goldilocks zone would be minimal and very close to the star. Orange K stars make up 13% of the stars in the Milky Way. They have a modest Goldilocks zone but are fairly active with some radiation levels. Yellow G type stars like our Sun, make up only 6% of the stars in the Milky Way. These stars have very large Goldilocks zones, and they are very quiet compared to K stars.

As we consider stars and habitable zones, we must realize that the type of star is just the beginning of the variables necessary for a star system to support life. Other critical factors include the size of the star, the location of the planet relative to the star, and the shielding a planet has for protection from the radiation of the star. Also, the stability of the star’s location in the Milky Way is another factor that goes into a life-supporting planetary system.

Our existence is not a product of chance. The more we learn about the Earth, the Sun, and the stars and habitable zones within the Milky Way, the more we understand that the statement, “In the beginning, God created the heaven and the earth” is a massive understatement of what God did to make a place for us to exist.

May 26, 2019May 24, 2019

How Far Away Is the Sun?

How Far Away Is the Sun? Does it matter how far away the Sun is? Absolutely yes. The picture shows the order of the planets in our solar system, but not their distance from the Sun. So how far away is the Sun from Earth?

Any star that has planets orbiting it may potentially create a “habitable zone” where the light and heat are just right for the possibility of life to exist. Earth resides in the middle of the Sun’s habitable zone with Venus and Mars near the edge of the zone. Of course, there are many other factors required to support any kind of life, and it appears that Earth is the only planet in our solar system that has all of those factors. Earth has everything needed to support not just primitive life, but advanced life.

So what is the range of the habitable zone? That depends on the star. The size and brightness of the star are critical. Another essential factor is the type of radiation emitted by the star. Our Sun has the just-right radiation. Other stars may emit x-rays, gamma rays, or other deadly radiation in amounts that would destroy all life and prevent a habitable zone from existing.

Back in the eighteenth century, scientists determined the distance to the Sun by watching a transit of Venus across the Sun. Venus passes between the Earth and the Sun twice every hundred years or so. By measuring the time of the transit of Venus from two locations on Earth, scientists were able to use triangulation and simple math to calculate the distance to the Sun.

But the question was, how far away is the Sun? The Sun is about 93,000,000 miles (150,000,000 km) away from us. Since the speed of light is 186,000 miles (300,000 km) per second, it takes about eight and one-third minutes for the light from the Sun to reach the surface of the Earth. The energy the Sun delivers to our planet is just right to make life possible.

If someone asks you “how far away is the Sun,” you can say it is the “just right” distance. There are so many “just right” features of our planet that we can genuinely say we are in the “Goldilocks Zone.” Some think it was all just an accident, but we believe it was God’s plan and design.
— Roland Earnst © 2019

June 25, 2017May 22, 2021

A Quiet Neighborhood is a Good Neighborhood

Beyond the Quiet Neighborhood
At a June 7 meeting of the American Astronomical Society, Benjamin Hoscheit presented information gained from studying 120,000 galaxies. The study agreed with earlier findings that our Milky Way galaxy is located in the largest cosmic void that we can observe. When scientists look one billion light-years out into the universe, they find that the cosmic density becomes much greater. The conclusion they have reached is that the Milky Way is in a relatively open area of space about two billion light-years across. We live in a quiet neighborhood.

The computer image from the Millennium Simulation Project illustrates the dense filaments of dark matter stretching through space. Galaxies are mostly clumped along the filaments. The Milky Way resides in one of the voids between those strands. What are the implications of that? Galaxies tend to be in clusters, and our cluster is called the Local Group. A typical galaxy cluster will have 10,000 galaxies close together. (Close by cosmic standards.) The Local Group has only forty galaxies, and all of them are dwarf galaxies except the Milky Way and Andromeda which are medium-sized. If there were large galaxies close to us, their gravity could distort the spiral structure of the Milky Way making advanced life on Earth impossible.

The Milky Way is a spiral galaxy—the only kind of galaxy capable of supporting advanced life. Star formation drives the spiral motion. Star formation requires the infusion of gas and dust which the small galaxies provide. Clusters of galaxies reside inside superclusters. Our Local Group cluster is on the outer fringe of the Virgo supercluster. If it were near the center of Virgo, the massive clusters there would absorb the Local Group and make life impossible.

Also, our solar system is located in the best position within our galaxy at about two-thirds of the distance from the center. In the center of the Milky Way (and most galaxies), there is a massive black hole that would swallow our solar system if we were anywhere near it. If we were farther out in the spiral, the solar system would be subject to massive instability, again making life impossible.

Of course, Earth is also located in the solar habitable zone where we are not too close or too far from the Sun. One final thing to note is that in this cosmic void and the position in our galaxy, we are at the optimum location for observing all of the things I mentioned. We have an excellent view of the universe. We are in more than a quiet neighborhood. We are in the “Goldilocks Zone” where everything is “just right.”

You could say that we got lucky and all of these things, and many others, are merely freak accidents. We believe that God had a reason for putting us where we are, and has given us a purpose for being here.
–Roland Earnst © 2017