Space-Travel Adventure Movies

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.)

— Roland Earnst © 2021

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

Making the Right Assumptions

Making the Right Assumptions about Life in Space

In my first college course in statistics, the professor made the following statement: “You can prove anything by statistics as long as you make the right assumptions.” I didn’t understand what he meant at the time, but I have seen the truth of that statement over the years. People decide what they believe, and then they manipulate statistics to prove that they are correct. Another way of saying it is, “Figures don’t lie, but liars figure.” This is true of religious people and atheists alike, and it’s a difficult mistake to avoid. Making the right assumptions to prove your point is usually possible.

There are some things we need to know about any statistical claim. The first is whether there are unconsidered variables in the calculations. For example, recent COVID death statistics failed to include other conditions that affected the mortality of people with the disease. Mortality rates for terminally ill people in nursing homes are not the same as those for college students.

People who claim that statistics indicate there must be inhabited planets with people like us base their claim on limited variables. In 1961, Astronomer Frank Drake formulated what is known as the Drake Equation to compute the probability of life on other planets. Drake used seven variables, with each assigned a probability factor. They are:

R∗ = the average rate of star formation in our galaxy
fp = the fraction of those stars that have planets
ne = the average number of planets that can potentially support life per star that has planets
fl = the fraction of planets that could support life that actually develop life at some point
fi = the fraction of planets with life that actually go on to develop intelligent life (civilizations)
fc = the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
L = the length of time for which such civilizations release detectable signals into space


It should be evident that none of these variables are based on observations but on making the right assumptions. In addition, since 1961, science has added a vast number of new variables. For example, we need to consider black holes, star distribution, planetary chemical makeup, and asteroid bombardment. Added to that list are a host of physical constants and geologic processes we have learned through space exploration.

Astronomer Dr. Hugh Ross has refined and expanded the list to include 322 variables. Even assigning modest values for each of those parameters would mean that the probability of all 322 occurring together (as they have on Earth) would be 10-388. That number is beyond impossible. Making the right assumptions involves considering all of the variables.

Whether life exists on any other planet
is not a biblical question and has nothing to do with the existence of God. However, tomorrow we will examine some other statistical issues involving God’s existence.

— John N. Clayton © 2021

Reality of Space Travel

Reality of Space Travel and Little Green Men

Although space-travel movies are exciting and fun, they are not very realistic. Einstein’s theory of special relativity says that it’s impossible to travel at the speed of light. There is overwhelming proof that he was right. That fact has an impact on the reality of space travel.

Astronomer Dr. Hugh Ross wrote an excellent book entitled Why the Universe is the Way It Is. In this book, he states that due to the laws of physics the top speed of a spaceship would be limited to about one percent of the speed of light, or 6.7 million miles (10.8 million km) per hour. Based on that, he says that for aliens to travel from any other planetary system where intelligent beings could possibly exist would take at least 25,000 years! (Remember that it will take nine months just to travel to Mars, our neighboring planet.)

So when you watch a two-hour movie in which people travel from one planetary system to another at hyper-light-speed, remember that it’s only Hollywood. The reality of space travel is not what we see in the movies. We live in a universe designed by a Creator who gave us a special place with everything we need to live. Is there any kind of life, not just intelligent life, anywhere else in this vast universe? We don’t know, but the chances of meeting intelligent beings from another planet are very, very slim. That’s the reality of space travel.

By the way, my picture is poking a little fun at a statement made by the well-known atheist biologist Richard Dawkins in his book The Selfish Gene. He begins chapter 1 by stating, “Intelligent life on a planet comes of age when it first works out the reason for its own existence. If superior creatures from space ever visit earth, the first question they will ask, in order to assess the level of our civilization, is: ‘Have they discovered evolution yet?’”

So does discovering evolution indicate advanced civilization and the level of our intelligence? More importantly, does evolution explain the reason for our existence? Personally, I think the reason for our existence is not found in evolution, but begins in Genesis chapter 1 and is developed in the rest of the Bible.

— Roland Earnst © 2019