Solar System Design

Solar System DesignAstronomers today use technology to examine areas of the cosmos far removed from our solar system. The fact that they are finding the other systems are very much different from ours should tell us something. In fact, the more we study those other systems, the more we learn about our solar system design and why it is the way it is.

One interesting fact about other systems is that even though some planets are very large and obviously gaseous, they can exist very close to their stars. Astronomers in the past explained the fact that the inner planets of our own solar system are rocky and hard by saying that the Sun burned off the gases and left the rocky material. That may be partially true, but in 2002 astronomers discovered a planet they named OGLE-TR-56b. It is about the same mass as Jupiter but over 30 percent larger. It has to be a gaseous planet to have such a low density.

The surprising thing is that OGLE-TR-56b orbits its star at an average distance of only 2 million miles (3.2 million km). Our innermost planet Mercury is 36 million miles (58 million km) from the Sun. The outer atmosphere of this planet must be around 3000°F (1650° C). It is evident that gaseous planets can exist very close to their stars, so our old explanation of the inner planets in our solar system design is vastly oversimplified.

Most of the planets we see around other stars are very large, which is not surprising since it is easier to see a big planet than a small one. One extra-solar planet is 17 times as massive as Jupiter. The strange thing is that many of the giant planets are closer to the Sun than Venus. Old theories of planet formation suggested that due to the large gravity values of stars, it was impossible for planets to form close to the stars. We now know that is not true.

Science programs on television have delighted in proposing that the cosmos is full of planets and that every galaxy has literally millions of planets. The hope is that if you have enough planets, the chance of having another Earth is improved. We now know that many galactic systems do not have planets at all. The composition and age of galactic systems obviously have a major impact on whether planets can exist, but claims of billions of Earth-like planets in the cosmos are highly exaggerated.

The type of star also has an impact on whether planetary systems can form. Most stars in the cosmos are binary systems containing more than one star. A planet can orbit the stars at a great distance, but shifting gravity fields make planets unlikely if the stars are close together, as most are. How much metal there is in a star system affects planet formation. Metal content varies within galaxies as well as between stars. A part of space dominated by gases like hydrogen and helium are not as likely to produce planets as areas where there are large amounts of iron, manganese, cobalt, and the like. Solar system design requires the right kind of star.

Perhaps one of the most exciting lessons we have learned from other solar systems is that the shape of the orbits of planets in our solar system is very unusual. Most of them have very circular orbits meaning that their distance from the Sun does not vary a great deal. Venus has an orbit that is .007 with 0 being a perfect circle and 1 is a straight line. Pluto has the most elliptical orbit, but even Pluto is less than .3 on the 0-1 scale. Our solar system design is unusual.

Circular orbits like ours are very rare in other solar systems where .7 is a very common orbital value, and virtually all orbits exceed .3. If a planet swings far out from its star and then comes much closer, it should be obvious that temperature conditions are going to be extreme. Not only will such a planet have extreme conditions itself, but it will have a very negative effect on any planets that do have a circular orbit in the system. If Jupiter came closer to the Sun than Earth with each orbit, imagine the conditions on Earth as Jupiter went by us.

We now know that our gas giant planets (Jupiter, Saturn, Uranus, and Neptune) are essential to us because their gravitational fields sweep up any debris from outer space. Without those planets, comets and asteroids would pound Earth and life here would be difficult if not impossible. The fact that they are outside Earth’s orbit at a considerable distance and in a circular orbit allows us to exist in a stable condition for an extended time. The comets that do enter our system by avoiding the gas giants do not come in along the plane of the solar system called the ecliptic. Coming in from other directions, they have no chance of hitting Earth since they are not in the plane of Earth’s orbit around the Sun.

Like everything in science, the study of the cosmos and other solar systems speaks eloquently to us about the design and planning that is part of everything in the creation. As we discover more data, other factors will surely tell us how unique our solar system design is. In the twenty-first century, we have more reasons than any humans have ever had to realize the truth of Psalms 19:1.
— John N. Clayton © 2019

How Many Moons Are Enough?

How Many Moons Are Enough?
When it comes to moons, it seems that Earth got cheated. We have only one moon while Mars has two. Neptune has fourteen moons. Uranus has twenty-seven. Saturn not only has rings, but it also has sixty-two moons. (Update- We now know that Saturn has 82 moons! Lucky Jupiter has sixty-seven! (Update- It’s now 79!) To add to the embarrassment, puny little Pluto, which is no longer considered a planet, has five times as many moons as Earth has! The only bragging point we have is that we can say we have more moons than Mercury and Venus. (They have none.) So how many moons are enough?

Actually, one works very nicely. Our single moon is critical to the existence of life on Earth. It’s because of the moon that Earth has a stable tilt on its axis of 23.5 degrees. That tilt prevents temperature extremes on this planet. With no inclination, the area of the Equator would be extremely hot and the poles extremely cold and dark all year. With a greater tilt, seasonal weather changes would be extreme all over the planet. Because of the angle of the inclination, we have proper seasons, and the air gets mixed to temper the weather extremes.

Our moon has the right mass at the right distance to keep Earth’s tilt stable. The moon plays several crucial roles in making our planet a great place to live, but stabilizing the tilt is one that’s extremely important. So how many moons are enough? I would say that one moon of the right size and at the right distance is just right.

Oh, and those other planets with more moons — none of them are habitable. Guess who has bragging rights now? Thank God that he gave us a just-right moon, and we don’t need any more. We see evidence of God’s design in every detail of our planet.
–Roland Earnst © 2018

Neptunian Influence

Neptune Photo from Voyager 2 - NASA
Neptune Photo from Voyager 2 – NASA

The planet Uranus was observed by scientists as early as 1690. For over 100 years astronomers watched this “last planet” in the solar system with wonder. The problem was that the orbit of the new planet did not follow the rules. The eccentricity of Uranus’ orbit told the astronomers that there was something very large and forceful that was having a real impact on what Uranus did and how it behaved. As time went by, better telescopes were built. Astronomers had watched Uranus long enough to know where the great influence was, so they turned their instruments to that part of the sky and were astounded to see still another planet–Neptune! The orbit of Neptune was established and studied, and it too did not quite obey the rules, so astronomers turned their most powerful instruments even further out and discovered Pluto. Most modern discoveries in astronomy are related to influence. We know where to look and what to look for because we see the influence of an object long before we see the object itself.

The same principle applies to human relationships and Christ. If people are Christians, their influence should be obvious to a stranger long before that stranger knows the source of the strength in the Christian’s life. Jesus said, “By this shall all men know that you are my disciples if you have love one for another.” Jesus also said, “By their fruits you shall know them.” Scientists would never have thought of looking for the planet Neptune until they saw its influence on Uranus. Many people will never think of looking for Christ until they see his influence in the lives of Christians. We should not have to tell others we are Christians, but they should suspect it by the way we live and how we treat one another.
–John N. Clayton © 2017