YOUNG EARTH AND DISTANT STARLIGHT (PART 2)

Part 1 explains that the cause of the universe is supernatural and cannot be explained by natural events. The word of God brought the universe into existence from something that is not visible, something, unlike ordinary visible/tangible matter and energy. This is consistent with the scientific conclusion that the matter and energy that comprise the universe cannot be eternal. Thus, the cause of the universe must be supernatural.

2. There are potential explanations anyway.

Christian astrophysicists have proposed various explanations as to how God might have created things in such a way that even Adam and Eve would have been able to see distant starlight. This section is a bit technical, but we have tried to make it as easy as possible to understand. The ideas are mind-stretching because they seem to conflict with our everyday experience of the world.

Time dilation models

Einstein is famous for discovering that time is not constant but is affected by movement (speed) and gravitational forces. This is known as Special Relativity and General Relativity, respectively. When an object moves very fast, time for that object slows down, or even stops at the speed of light. Also, when an object is in the presence of a massive object, which provides a strong gravitational attraction, time slows down. These effects are measurable and thus have been verified by experiment. They are so real that GPS satellites, which depend on precision clocks for global positioning calculations, must have their on-board clocks adjusted for the lesser gravity (being up in the sky) and for the speed of movement of the satellite.

Now we can try to imagine God creating the universe, “stretching out the heavens” (Psalm 104:2) on Day 4 of Creation Week. This would entail massive gravitational forces and enormous differences in speeds, both of which would change the time ‘out there’ compared to planet Earth. Thus, in one Earth day (Day 4) an enormous amount of time could transpire ‘out there’ allowing ample time for the light to travel to Earth. Various models have been proposed based on these ideas

New Model

Well, this is not so new; it goes back to Einstein’s era. Einstein’s findings of time changing with motion means that the speed of light (c) cannot be measured in one direction. It can only be measured for the round trip (two-way speed). This gives the average speed, but we cannot know if the speed is the same in both directions.

Einstein assumed that the speed of light in all directions was the same (called the synchrony convention) but he realized that it was an assumption without proof.

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God calls us to humbly submit to Him and His Word.

Physicists have been wracking their brains ever since Einstein to try to figure out how to measure the speed of light in one direction. For example, we might want to fire a laser beam at the moon and measure how long it takes to get there. However, we need to place a clock on the moon that is telling the same time as a clock on Earth. That is a problem because as we fly the clock to the moon, the time changes on the clock! Putting it another way, the only way the observer on the moon can know when the light beam is sent from Earth is to be sent a message, which then travels at the speed of light. It all becomes totally circular!

There has been quite some discussion about this in recent times, including from secularists—that the speed of light might not be the same in all directions.

So, what if the speed of light towards us was infinite and the speed away from us was c/2? That would give an average speed of c, which we measure. There is no way that we can know that this is not so. And that would mean that light from distant stars would reach Earth the instant that they were created. No problem!

Go to http://www.creation.com for the entire article.

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