Earth Archives

February 18, 2022February 15, 2022

No Life Without Water

Without water, life would not be possible. For that reason, astronomers are constantly looking for other locations in the universe where liquid water might exist. Only in such places could there be any hope of finding life. Whether life exists anywhere in the universe outside of planet Earth is a question people have asked for hundreds of years. Scientists still don’t know the answer, but everyone agrees that there could be no life without water.

The water molecule seems very simple. It is H²O–one oxygen atom combined with two hydrogen atoms. However, instead of bonding in a straight line (H-O-H), the two hydrogen atoms are on one side of the water molecule at a 104.5-degree angle from each other. That alignment gives the hydrogen side of the water molecule a partial positive charge, while the other side has a partial negative charge. Because of that, the positive and negative sides of water molecules attract one another and form hydrogen bonds resulting in a network of water molecules.

When water is in the gaseous state, the interaction between molecules is negligible. However, when it is in the solid form of ice, each water molecule forms a bond with four others, creating a lattice that causes ice to be lighter than liquid water. For most substances, the solid state is heavier than the liquid state. This unique property of water causes ice to float. Additionally, the low thermal conductivity of ice prevents the water below from freezing. If lakes and oceans froze from the bottom up, it would kill all marine life and ultimately all life on Earth.

If water molecules did not form hydrogen bonds, instead of boiling at 100 degrees C, water would boil at -100 degrees C. That would prevent life processes. Furthermore, because there is a 100 degree C difference between water’s melting and boiling points, life is possible in Earth’s wide range of environments. Water has the highest heat of evaporation of any known substance so that it remains liquid up to and even at its boiling point. It also has the second-highest heat capacity of any known substance, allowing its temperature to remain stable during heat fluctuations in the environment. Those qualities of water are also critical for life, meaning that there could be no life without water.

Water’s ability as a solvent makes it essential for the life processes of living cells. Likewise, water’s inability to dissolve oily substances is vital to create a strong “hydophobic effect.” Cell membranes, DNA, RNA, and proteins all contain oil-like regions. If the water in the cells could dissolve them, life would not be possible. In addition, the water molecule can participate in and enable chemical processes such as hydrolysis, reduction, oxidation, and others that are essential in living cells.

The bottom line is that there is no life without water and the fine-tuning of the hydrogen bonding in water molecules. With new scientific discoveries, we see fine-tuning for life in the cosmos and even in the cells of our bodies. Without that fine-tuning, life would not exist, and we would not be here. Accidental coincidences do not explain such incredible precision of design. We think the explanation goes beyond science and points to an intelligent Designer.

For much more on this, read chapter three, “The Chemical Anthropic Principle,” in Fazale Rana’s book Fit for a Purpose.

January 14, 2022January 12, 2022

One-Electron Difference Between Oxygen and Nitrogen

How does a one-electron difference between oxygen and nitrogen allow life to exist on our planet? Why does the correct mix between those two elements in our atmosphere make it possible for us to be here?

Yesterday, we talked about covalent bonding in oxygen and nitrogen. We said that an oxygen atom needs to share two electrons with another oxygen atom to make a stable oxygen molecule. However, nitrogen needs to share three electrons with another nitrogen atom to complete the valence shell and create stability. So how can a single electron difference between oxygen and nitrogen be a big deal?

For oxygen or nitrogen to combine with other elements to form new compounds essential for life, the covalent bond between them must be broken. It takes about double the energy to break the triple bond between two nitrogen atoms as to break the double bond between two oxygen atoms. That means oxygen can be released to form other compounds much more easily.

What does it take to break the oxygen bond and combine it with another element? Apply some heat to combustible material, and you will find out. You will get fire, which is a chemical reaction involving rapid oxidation of the burning material. Much slower oxidation occurs when oxygen in your blood combines with nutrients in your body, giving you energy and generating body heat. Another slow form of oxidation is when iron combines with oxygen to form iron oxide, or rust.

If it were not possible to release oxygen from its molecular bond with relative ease, we would not have combustion to heat our homes, run our vehicles, or energize our bodies. Life would not be possible. However, nitrogen bonds are much harder to break, and nitrogen is also essential for life. Tomorrow we will look at how the one-electron difference between oxygen and nitrogen enables life on planet Earth.

January 5, 2022January 4, 2022

A Larger Dinosaur Has Been Found

We are amazed by the enormous size of animals in the distant past. From a giant millipede to the Titanoboa and the Titanosaur, the size of ancient animals excites fossil hunters. Since 2017, Patagotitan has held the record for the largest dinosaur at 120 feet (36.5 m) long and weighing over 57 tons. However, paleontologists in Argentina recently found pieces of a larger dinosaur.

The size of this animal has several implications. First, we need to be reminded that, unlike mammals, reptiles never stop growing, so there is virtually no limit to their size. A more significant issue is having environments warm enough for such animals to live and enough plant material to sustain them, plus a high oxygen level.

The environment that allowed a larger dinosaur to survive would not have been hospitable to mammals. Reptiles can not only survive very hot conditions, but they require heat to sustain their bulk. A hot Earth with very wet conditions would also promote rapid plant growth. Accordingly, the plant fossils from the time of those animals indicate huge size and rapid growth.

The Bible makes clear that everything humans would need to live on Earth was produced before humans were created. Therefore, we have maintained that God was not a magician miraculously zapping things into existence. God could do the creation any way He wished, but He wisely chose to make the resources humans would need in such a way that we could find them.

God acted as an engineer, producing the coal, gas, oil, iron, salt, and other resources we would need by processes we can study and understand. The volume of fossil fuels stored up for our use is a staggering number. Present-day processes on Earth could never produce them, but the enormous animals and plants of the past created enough resources to take us into the nuclear/solar age.

The Bible tells us that God created planet Earth, not how or how long He took to do it. Genesis 1:1 is not dated or timed. However, as we look at the record of the past, we see God’s wisdom and power and the magnitude of the creative process that allows us to exist.

Rather than trying to fit a larger dinosaur into Noah’s Ark, we need to take Genesis for what it says and not add denominational traditions. We must not use the economy of language in Genesis to justify our human religious theories.

Reference: “Have Scientists Found the Biggest Dinosaur?” Discover magazine, January/February 2022, page 53.

December 18, 2021December 16, 2021

Our Essential Moon and Life on Earth

For most people, our Moon is just a light at night. The fact is that our essential moon is part of Earth’s fitness for life. Any change in the size, distance, or obit of the Moon would be catastrophic for life on Earth.

Having just one moon of significant size is a very unusual situation. Venus has no moons, and the two tiny moons of Mars are apparently captured asteroids. Jupiter, Saturn, and Uranus each have multiple moons, many of which are of significant size. However, a single large moon is unique to planet Earth.

So what does our essential Moon do for us? Because of its size, it has a significant gravitational pull on the Earth. That pull is strong enough to cause our planet to flex as the Moon orbits it. That creates a disturbance in geologic activity on Earth when the Moon is over an area of unstable rock.

The Moon’s pull on Earth’s waters is more significant. The Moon’s pull stirs the oceans much like a person might stir a large saucepan of soup. Our Moon causes many ocean currents and tides, even in large lakes. Ocean currents not only move nutrients around but transport heat as well. For example, the Gulf Stream is critical to marine life along the east coast of North America and controls temperatures along the entire coast.

The Moon’s gravitational pull is closely related to its mass. Therefore, a larger moon would cause massive flooding along the edges of continents. If it were smaller, the tides and currents would not be large enough to clean the estuaries or warm the landmasses, and many marine lifeforms would not survive.

If we had more than one moon, they would affect each other. There are rock tides causing moonquakes on the Moon due to the pull of Earth’s gravity. A second moon would amplify this effect, and if the two moons collided, the fragments would threaten life on Earth. Every total solar eclipse reminds us how precise the Moon’s size is. It can exactly cover our view of the Sun, allowing us to see and study the Sun’s corona.

Most of us overlook how our essential Moon’s size, mass, distance, and orbit shape seem to be carefully designed. Attributing that precision to blind chance requires faith as great as attributing life to chance. We would suggest that the Creator used his wisdom, described beautifully in Proverbs 8:1-5 and 22-32, to design an Earth/Moon system that allows life to exist and prosper on planet Earth.

Reference: Smithsonian magazine, December 2021, page 88.

December 13, 2021December 12, 2021

Space-Travel Adventure Movies

Space-travel adventure movies and novels may be fascinating, but they are not very realistic. Traveling through space poses many hazards to humans beyond equipment failures. There is also the danger of radiation exposure when a person leaves Earth’s protective atmosphere and magnetic field. And perhaps the most significant of all is the issue of time.

Travel to the Moon will take days. Traveling to Mars will take months. A space-travel adventure to any planet outside of our solar system would take multiple lifetimes. Astronomers have toyed with the idea of traveling to a planet orbiting Proxima Centauri, which is the closest star to us. That planet, Proxima Centauri b, is 42 light-years from Earth. Unless someone could find a way to travel through a wormhole, if such a thing exists, it would take 6,300 years to make the journey with present technology.

We are considering the present technology to be the speed of the Parker Solar Probe launched in 2018, which is 430,000 miles (690,000 km) per hour, or about .064 percent of light speed. According to Astronomer Dr. Hugh Ross, the laws of physics would limit the top speed of a spaceship to about one percent of light speed, but we are far from achieving that. Also, a factor to consider would be a way to slow down on approaching the destination to avoid going right past it or crashing into it.

So, if we sent out a space-travel adventure crew to Proxima Centauri b, it would take many generations to arrive. That means people would have to reproduce many times on the way. Factors to be considered would have to include having enough crew members and genetic diversity to have a healthy crew on arrival at the destination. Using computer modeling, scientists have determined that the minimum team required would be 49 males and 49 females. Ninety-eight crew members would need a large ship. In addition, there would have to be facilities for recreation and to grow food.

The vast majority of the travelers on this spacecraft would never see Earth or the destination planet. Exposure of many generations to the radiation of outer space could cause physical or mental deformities that we can’t imagine. What if this small community just couldn’t get along together in cramped quarters? Avoiding a mutiny or rebellion would be a significant challenge. Keeping hundreds of generations focused on the same mission would be impossible. Putting the crew into a cryogenic state for thousands of years to avoid the multi-generation problem does not seem to be realistic. (Remember the movie “2001: A Space Odyssey?”)

Producing food and recycling water would be essential for such a space-travel adventure. However, taking and preserving all equipment and materials needed for the crew to survive in a hostile environment on arrival at the alien planet would be impossible to plan or predict.

We may enjoy science fiction such as “Star Trek,” “Star Wars,” or “Lost in Space,” but none of them are even remotely realistic. God has given us a beautiful planet with everything we need to survive and thrive. What we must do is take care of it. That means using resources wisely, protecting the environment, and protecting the animals that share the planet with us. Stewardship of God’s gifts was a command from the beginning. (See Genesis 2:15.)

References: TechnogyReview.com, Space.com, and Why the Universe is the Way it Is by Hugh Ross.

November 22, 2021November 19, 2021

Seeing Colors is a Blessing

Seeing colors of light is a blessing. Light is electromagnetic energy vibrating in a specific range of frequencies, but our brain perceives the frequencies as colors.

When your retina receives a particular frequency of electromagnetic energy, it sends a signal to the visual part of the brain, which generates a mental image with luminosity and what we call color. Seeing colors is merely our perception of the various frequencies or wavelengths of light energy.

Every creature with vision can see different intensities of light, but not all can see as many colors as humans can. However, some, such as bees and butterflies, can see colors we can’t see. Human eyes see best in the range of frequencies that our brain interprets as green, but our vision is not as sensitive in the red and blue frequencies. So our brain combines the red, blue, and green frequencies to allow us to see about ten million color variations.

Consider how much of our world is green. Green is very soothing compared to reds or blues, but it would be dull and boring if we could see nothing but green. Seeing colors can change our mood, causing us to become relaxed or excited. Colors can convey a message or bring back memories. Different colors appeal differently to various people.

The color of our eyes, hair, or skin is part of what makes each person unique and part of God’s human tapestry. Therefore, we should thank God for the amazingly complex physical laws and biological properties that bring color into the world for us to enjoy.

November 19, 2021November 17, 2021

Full Moon – Mini-Moon

If you saw the full moon last night and the partial eclipse early this morning, you might have noticed that it seemed to be a little smaller than usual. That’s because it was a mini-moon.

The Moon’s orbit around Earth is slightly elliptical. For that reason, it is not always the same distance away from us. The average distance to the Moon is 238,855 miles (384,400 km). When it’s closest to Earth, the distance is 225,623 miles (363,105 km), and we call that “perigee.” When the moon is farthest away, the distance is 252,088 miles (405,696 km), and we refer to that as “apogee.” So the difference in the distance is approximately 26,500 miles (42,648 km), and that’s just enough to make a noticeable difference in and size.

Since the Moon is now at apogee, the result was that the full moon last night was smaller, and some people call it a “mini-moon.” Why should we care about the distance to the Moon? Two things make our Moon unique as compared to other moons in our solar system. The Moon’s orbit is less elliptical than that of other moons, and it is also the largest compared to the size of the planet it orbits. Because of its size and orbit, the Moon has many beneficial effects on our planet.

We have previously discussed some of the beneficial effects of the Moon, such as HERE, HERE, and HERE. However, perhaps the most crucial benefit is that it gives stability to Earth’s rotation. Spin a top, and you will notice that it tends to wobble in its rotation. That wobble is called “precession.” Without the Moon’s stabilizing effect, the Earth would wobble, causing instability in our seasons, climate, and weather. In other words, without the Moon, our planet could not support advanced life.

Even if you call it a mini-moon, the Moon is the right size and distance with an orbit that is only slightly elliptical. Because of those precise design factors, we can look up at the full moon and thank the Designer who gave us everything we need to make Earth our home.

November 18, 2021November 17, 2021

Lunar Eclipse and the Bible

What is the connection between tonight’s lunar eclipse and the Bible? Before we answer that, let’s consider the eclipse.

Lunar eclipses occur twice a year on average when the Moon passes through the shadow of the Earth. Every 29 and a half days, the Sun, Moon, and Earth are in line with the Earth in the middle. When that happens, we see a full moon. However, a couple of times a year, the alignment is so precise that our planet momentarily blocks sunlight from reaching the Moon. When Earth’s shadow falls across the Moon, we call it an eclipse. Sometimes the shadow completely blocks the Moon, giving us a total eclipse. This eclipse will be 97%.

The eclipse will occur in the early hours of Thursday, November 19, and it will be the longest partial eclipse in 580 years. The reason for the length is that the Moon is at apogee, meaning it is at its farthest point away from Earth in its somewhat elliptical orbit. Because of that, the Moon will be moving at its slowest speed in its orbit. (That’s a little bit of high school physics.) This eclipse is occurring during what some refer to as the Beaver full moon because it was the opening of the beaver-trapping season. In this case, it is the Micro Beaver because the Moon is farther away and will appear a little smaller.

This eclipse will be visible from all 50 of the United States at different areas of the sky, depending on your geographic location. The peak will be at around 4 a.m. EST (9 a.m. UTC), but it will stretch over almost three and a half hours. You can see a world map of the areas where the eclipse will be visible, check the exact beginning and end times for your location, and even watch a live stream of the eclipse at the timeanddate.com website. You may have to resort to the live stream if your area is overcast, or you don’t want to go outside early in the morning.

Now, back to the connection between the lunar eclipse and the Bible. The point is that we can accurately predict the exact times and dates of lunar and solar eclipses many years in advance. We can also precisely know the time for sunrise and sunset anywhere on Earth. We can also launch a rocket to Mars, knowing exactly where the planet will be in space when the rocket arrives. How is that possible? Because God is faithful.

The ancients believed in many gods with human failings, acting capriciously. It was Christian faith in an omnipotent and never-changing God that made science possible. We have often said that we can know God from the things He has made. Romans 1:20, “For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from has been made…” The book of scripture and the book of nature were both written by God, so they must agree. Even though we learn more details about God and His plan from scripture, we can know much about Him from nature. That is the connection between the lunar eclipse and the Bible. One thing the creation teaches us is that God is faithful, just as we see in Hebrews 10:23: “Let us hold unswervingly to the hope we profess for he who promised is faithful.”

November 17, 2021November 16, 2021

Do We Really Want to Move to Mars?

Mars is our closest neighboring planet at 33.9 million miles (54.6 million km), and it seems that various countries want to send people there. Several countries have launched successful missions to fly by, orbit, or land on the red planet, but none have yet sent people there. The list includes the United States, the Soviet Union, Japan, the United Kingdom, India, Russia, the United Arab Emirates, and China. As for human explorers, Elon Musk of SpaceX once expressed a desire to send people there in 2024—an overly ambitious objective. The UAE wants to establish a colony there in the next 100 years—a much more conservative goal. The question is, “Do we really want to move to Mars?”

Why does Earth seem to be designed for life while Mars is a rocky and barren place without an atmosphere? Scientists theorize that at one time, Mars had an atmosphere but then lost 99% of it. Why? Mars is smaller than Earth, so it has less gravity to hold onto the atmosphere, but that’s only part of the answer. One hypothesis is that solar wind (charged particles from the Sun) tore away the atmosphere. Then why didn’t Earth lose its atmosphere since we are even closer to the Sun? Earth’s magnetic field protected our planet. Why do we have a magnetic field? The movement of Earth’s molten iron core generates the magnetic field.

Many other factors make planet Earth ideal for life, and importantly, advanced life. So do we really want to move to Mars? The now-defunct Mars One project got tens of millions of dollars from thousands of people who signed up for a one-way trip to Mars to establish a human colony there. Elon Musk has indicated that he wants to get people to Mars just for the sake of getting there. He was quoted as saying, “Fundamentally, the future is vastly more exciting and interesting if we are a space-faring civilization and a multi-planet species…”

With all of this desire to leave the planet ideally designed for life, the question we should ask is, “Was Earth’s design merely chance happenstance, or was it part of a divine design?” I suggest that the many factors that make our planet just-right for human life indicate more than chance coincidence.

November 7, 2021November 6, 2021

Happy Cross-Quarter Day!

Today is a cross-quarter day, meaning that the Sun is halfway between an equinox and a solstice. The word “equinox” is a combination of “equal” and “nox” (which means night), and it occurs when the Sun is directly overhead at the equator. The solstice is when the Sun reaches its greatest distance from the equator at approximately 23.5 degrees. Then it is directly overhead at the Tropic of Cancer in the north or the Tropic of Capricorn in the south. Today, the Sun is at its halfway point between the equator and the Tropic of Capricorn.

For the Northern Hemisphere, the autumn cross-quarter day falls near Halloween. In the spring, it is near “Groundhog Day.” For those of us interested in astronomy and Earth’s climate and weather, that gives Halloween and Groundhog Day a significance different from what most people consider.

For us, a cross-quarter day is another reminder that our planet is extraordinary. The reason for equinoxes and solstices is Earth’s 23.5-degree tilt. That tilt is also vital to our survival. The Sun doesn’t overheat any section of the planet because Earth’s tilt changes the latitude where the Sun is overhead. It also avoids over-cooling as the Sun returns soon enough to avoid the extreme cold temperatures we observe on other celestial objects. This design also generates weather systems, the movement of ocean currents, winds to distribute plant seeds, and many other factors needed for life.

Indeed “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 display knowledge” (Psalms 19:1-2). Happy cross-quarter day!

Reference: Archaeoastronomy.com