Earth's magnetic field: Testament to more than a young earth
Evidences Gleaned from Earth's Magnetic Field
1. Young earth
Old earth proponents will tell you that the earth is about 4 1/2 billion old. That means the magnetic field should also be about 4 1/2 billion years old. If that were true you would expect to have a magnetic field that's very stable, not changing much over time - since we're talking about a lot of time: not merely hundreds of years, or thousands or even millions of years, but billions with a "b". The problem with that supposition is that it doesn't match the observed measurements. It has been known for some time that the earth's magnetic field is decaying. As geologist and creationist John D. Morris put it:
Obviously that's a problem. A field decaying that quickly will last only a few thousand years not a few billion. And it's gotten worse for old age earth believers: scientists have recently discovered that the field has begun to decay even faster:
This does not bode well for the old earth explanation of a magnetic field that is billions of years old. Their explanation up to this point has been the field is created and maintained by a "dynamo", a natural generator. Magnetic fields are created by the movement of electrons - a current flow. Scientist posit that the rotation of the earth and convection (movement due to heat) is sufficient to produce a current from the molten iron/nickel of the earth's outer core, which they believe would create a self-sustaining field generating dynamo. The problem with the theory is that "Scientists have not produced a workable analytic model, despite 40-50 years of research, and there are many problems."3
Creation Theory is Better Science
That would create a static field (not a generated one) that steadily decreased over time:
With this as a base for his science how did Humphreys do with his predictions?
The data from Pluto is still being analyzed. Based on his record, I expect Humphreys will be right on again. Even if he's off on the last one, creation science has already beat evolutionary science in predictive power of planetary magnetic fields. But there's a larger issue we've only alluded to that puts the nails in the coffin of evolutionary theory with regards to earth's magnetic field.
Regardless of how it was generated, scientists acknowledge that the earth's magnetic field is decreasing. And evolutionists have not dealt with the implications of a steadily decreasing magnetic field based on a current generated field. Recall the half life of the field is about 1400 years.
This conclusion is of course anathema to evolutionists. It proclaims a young solar system and thus declares both the Big Bang and Darwinian evolution invalid and impossible. Evolutionists (of both types) will never admit that of course, though they can't help but acknowledge they have no idea how the earth's magnetic field could last for billions of years.
For creationists, the problem is a simple one: The magnetic field was created at a set level about 6,000 years ago when God created the earth and has been steadily decreasing every since to the level it is today.
Earth's magnetic field also protects the atmosphere from being blown away by the solar wind, a fate that many scientist believe befell Mars which currently has no atmosphere and no magnetic field, though it once did. Thus a magnetic field of the proper strength is a requirement to protect both from charged particles from the sun, as well as to protect the finely tuned Nitrogen/Oxygen/Carbon dioxide atmosphere that supports life on the planet. As such finely tuned "coincidences" pile up, one begins to see the hand of a loving God who carefully prepared the creation for his creatures.
Incidentally, Mars' missing magnetic field presents a problem for those supporting the "dynamo" theory of field generation. According to the theory, though the planet is small (which could explain the missing atmosphere - the associated field would be too small to protect the atmosphere from the solar wind, so it just blew away), the dynamo should still be working - like the supposed one for the earth. That fact that it's not has caused scientists to come up with some far fetched reasons why it isn't.10 Dr. Humphreys' theory of a static field steadily decreasing over time, initially generated by the way in which the planet was created is not beset which such problems and conundrums. And as mentioned above the strength of the field at the present time was correctly anticipated by his theory (for multiple planets) before the it was actually measured.
Consider the Global Positioning System (GPS). Extra-terrestrial aliens don't exist, but for the sake of this hypothetical thought experiment, let us suppose an intelligent space alien examined our GPS system (the whole system, not just the device in your car), its components, and how it worked. What might he conclude? Consider first what he would observe: a system consisting of:
Based on these observations he would be justified in inferring that the GPS system was designed by an intelligence who intentionally created the various components to work together, and embedded the needed intelligence appropriately (maps, ability to receive and interpret the signals, location of destination points, etc) to allow the system to work.
If the conclusion of design is warranted in the above system, would it not likewise be warranted in an analogous system? The earth's magnetic field is part of such an analogous system. Scientists have recognized that many animals such as some birds11 and some fish and eels12 navigate using the earth's magnetic field field. All the components analogous to those in the above system can be identified in this system of which the earth's magnetic field is a part:
If you doubt the creatures have a built in map, let me give you a similar task to what they do that might convince you. Allow a friend to drive you while you're asleep to a place far away. Allow him or her to let you off somewhere - you don't know where - with only a compass to guide you. Now take your compass and without modern marvels such as GPS, smart phone, internet, etc. and navigate to my house. Wait - you say? You need more information? You need to know where you are, and where you're going? And a map? Precisely. That is my point precisely. The fact that these creatures are sensitive to the earth's magnetic field is just one marvel among a number of awe inspiring marvels. Being sensitive to the magnetic field while amazing, is not enough. They must also have a built in map that allows them to determine where they are, knowledge of their destination, and where it is on the map in order for them to arrive at their destination, as scientists have concluded:
Thus both systems - GPS and magnetic field navigation - are working in the same manner. If you believe design can be inferred from a preponderance of the Global Positioning system, then it is consistent to believe design can be inferred from a preponderance of the evidence of our finely tuned earth which include the magnetic field, and all the complex creatures who use and benefit from it.
The facts are clear. The only thing in dispute is the worldview used to interpret the facts. Are the above undisputed facts better explained as an act of a God who as part of his grand design carefully put them all in place for his beloved creatures? Or are they better explained by unintelligent, undirected, unguided forces? If the latter, you remain without an explanation for how the earth's magnetic field has existed for the duration of its existence, and where the map information came from that creatures use in conjunction with the magnetic field to navigate over the surface of the earth. To support a billions year old "dynamo" and evolution evolved maps, you must necessarily argue from ignorance.
Which is the more rational explanation?
8 John D. Morris, Earth's Magnetic Field
Referenced from: Jonathan Sarfati,
10 Scientists initially came up with the idea that a cosmic collision like one that supposedly created earth's moon hit Mars and disrupted the field. Then it was thought that one strike wouldn't be enough, the dynamo should still work, so the collisions went up to 5. Now there's a theory that states it would take up to twenty cosmic collisions to kill the theorized dynamo that they suppose generated the missing Martian magnetic field.
Did Mars's Magnetic Field Die With a Whimper or a
Bang?, Science Magazine, 4/30/2009
11 Birds, particularly Homing Pigeons
are well known for their navigational abilities. Scientists have long
suspected they use the earth's magnetic field due to their ability to
navigate without visual references, and now they are finding evidence to
support that theory. See:
12 Less well known are the
navigational abilities of water creatures such as salmon and eels, also
by means of the earth's magnetic field. See: