You may not have noticed, but a paper was just published that extends to age of the universe from the oft-quoted 13-8 billion years to 26.7 billion years. (And I am feeling every year of it!)
Any confusion here is compounded by the oft-stated statistic of 13.8 billion years being stated as a fact, when it is not. That stat should always be preceded by “according to the best theory available. . . .” It was and is a prediction made by a theory, the so-called Big Bang Theory (BBT).
The “new” prediction involves the BBT also, but folds in what has come to be called the tired light hypothesis. And to explain I need to provide a little background.
Back in the 1920’s most, if not all, physicists believed that the Milky Way galaxy was the entire universe. Then Edwin Hubble, an astronomer, determined that the so-called fuzzy “nebulae” we could see with our telescopes (fuzzy, so not stars) were so far away as to be outside of the our galaxy and thus the other galaxies were discovered.
We now know that there are more other galaxies in the “universe” than there are stars in our galaxy!
Part of Hubble’s research showed that “red-shifts” occurred and that the farther away these galaxies were, the greater their red-shifts. Now, redshifts are the shifting of lights toward the red end of the electromagnetic spectrum. Since most of the universe is hydrogen and hydrogen only emits four visible light colors (along with a bunch of invisible “colors”), we have measured exactly the colors of light that hydrogen emits but from far away stars and galaxies, often enough these colors are shifted toward the red end of the rainbow.
Hubble’s data showed that the farther away the source was, the greater the amount of red-shifting. The theoretical response was to interpret this as a manifestation of the Doppler Effect, you know that when a train is moving toward you, the pitch of the sound goes up, and when it passes, the pitch goes down. The movement of the sound source affects the pitch, aka frequency, of the sound. Since so many stellar sources are red-shifted, it must mean they are moving away from us and the only reason so many would be moving away is because the universe itself is expanding. The theoreticians went farther though and it wasn’t the case that the objects in the universe were just moving away from one another, but that space itself was expanding, carrying all objects with it.
I have always found this idea bizarre because I never thought of space as a thing that could expand, but the concept got theoretical support from all corners, and the “expansion of space-time” is now a cornerstone of cosmology.
There is only one problem. Hubble was wrong . . . and even he admitted it. More extensive studies show that that relationship Hubble found is not in evidence. So, the “idea that launched a 1000 theories” turned out to not be right. The theories that supported the expansion of space-time were all theories based upon space being “empty” and light traveling through it. We now know that “empty space” does not seem to exist and even the emptiest of spaces, intergalactic space, is awash with neutrinos, light, plasma, even atoms, etc.
A theory was advanced that claimed that the red-shifts were not caused by the Doppler Effect, but by light losing energy as it travels. (The frequency of light is directly proportional to its energy and inversely proportional to its wavelength, so if it loses energy its frequency drops and its wavelength stretches and longer wavelengths means redder lights.) This theory was disparaged by the true believers in an expanding universe by calling it the “tired light theory,” but whereas space-time expansion has no direct support, the tired light theory does. And it was by adding a soupçon of tired light to the BBT that the new age of the universe was calculated.
To get direct support for the interaction of light with plasmas causing a red-shift, you need look no further than our own Sun. The outer surface of the Sun is called the corona and the solar surface below it lingers at about 10,000 degrees Fahrenheit, while the thin corona can get as hot as 2 million degrees. While the corona is a layer of plasma, it is clear that light from below somehow loses energy to that plasma, leaving the light with less energy, a lower frequency, and longer, aka redder, wavelengths.
Intergalactic and interstellar space is full of plasma, although not enough (yet) to account for all of the red-shifts, but certainly a substantial part of them.
All of the theoretical support for the expansion of space-time is based upon theories that claim space is empty, so light has nothing to interact with (and make it tired) and the only force in play of any magnitude is gravity. Actual evidence shows that plasmas and the electromagnetic forces they bring into play, while smaller, are not insignificant.
The “tired light theory” received no support because of scientists favoring the BBT supporting theories which now turn out to be based upon false assumptions. It is never a good thing when scientists cling to theories and ignore, or worse, massage away, real data.
Now, what do you think are the consequences of the BBT theory going away? We still have many ideas as to what causes red-shifting, some of which have experimental/observational support which the expansion of space-time does not.
In fact, if one gives up on the falsely founded belief in an expanding space-time, one is left with an infinite universe which had no beginning and will have no end. This is not to the liking of scientists who harbor religious or spiritual beliefs because the universe having a beginning and an end aligns with religious thinking much better and an infinite universe would conflict with those religious beliefs, thus undermining some of those religion’s foundations.
We have come a long way. Back in the 1920’s Einstein pooh-poohed the idea of an expanding universe as he was convinced the universe was static. One hundred years later, cosmologists are still clinging to their nascent theories of an expanding universe, when more than a few contradictions have arisen. (Just one counter fact is all that is needed to bring a theory down.)
To point out just one, the BBT is founded on the expansion of space-time, but the numbers didn’t add up. In order for the bits we can see now to have gotten to where they are, some parts of the early universe must have been speeding above the speed of light which still seems to be a no-no, so, an ad hoc patch was created: cosmic inflation. The patch being that at the beginning of the expansion of the universe and even before, the rate of early expansion was accelerated mightily by a phenomenon called “cosmic inflation.” The only reason this was invented was to make the BBT not violate the laws of physics. No observations have been made to support such a thing existing, no mechanism for its action has been proposed. It only exists to make the theory hold together. I call such things magic. And “inflation” is not the only magical thing invented to save the BBT. There is also dark matter and dark energy, the existences of which are being stated as if they were factual. These concepts were proposed decades ago and still there is no observational or experimental confirmation of their existence. Their only reason for their being is to make the BBT work. Such “magical” patches are a sure sign a theory is about to collapse.
Special Pleading
Tags: Freeman Dyson, Special Pleading
And since it is Sunday . . .
I was reading a retrospective on the life and work of Freeman Dyson, the mathematician, scientist, and visionary, and the author dropped this beauty:
There is so much to unpack here! First, religions do not “grapple with questions.” They create ad hoc answers off the tops of their heads. If they can find any support for their answers in scripture, they will quote that, but that is not the same as a scientific citation.
As for being “beyond the scope of science” the meaning and purpose of life is beyond the scope of science because they are entirely made up and therefore lacking in any reality to study scientifically. When people use the phrase “the meaning of life” they really mean “the meaning of human life” because nobody would give a damn if it were the meaning of the lives of amoebae we were talking about. And, this is a form of special pleading as it is a claim that human life is just so damned special, it must have a meaning. And any such meaning would have to come from outside us, otherwise it would just be a social construct (sneer, sneer). And, if it came from outside us, it would have to come from some source, say . . . a god! The exact same can be said about our “purpose,” something else coming from outside (Is that you, God?).
Does anyone claim that ethics are anything but social constructed? (There is even the subtopic of “legal ethics!” Just ask Rudy Giuliani about that.)
And I can’t find any traction for the concept that we will never answer the riddle of consciousness scientifically. We have been only studying it scientifically for a few decades and it is a difficult issue. Philosophers have been considering it for much longer but they got nowhere as they had almost no real data to discuss. If we think science will not help us understand consciousness, why on Earth would we expect religion to figure it out? Religions were not created to answer questions.
So, this statement, if anchored in Dyson’s writings, is another indication that our religious cultures have a real grip on our thinking.
Dyson himself wasn’t above writing nonsense, for example consider the quote from one of his books “Science has as many competing styles as painting or poetry. The diversity of science also finds a parallel in the diversity of religion.” The first sentence seems true, the second seems bizarre. The diversity of science is created by the diversity of knowledge that stems from it. If the quantity of knowledge were miniscule then we would only have a few “scientists.” But because the knowledge acquired is so vast, we have biologists, chemists, physicists, cosmologists, botanists, etc. Even experts in these fields cannot handle all of the knowledge contained, so there are specialties within those specialties: in physics there are particle physicists, nuclear physicists, quantum physicists, medical physicists, molecular physicists, cosmological physicists, etc. And none of them knows what the others do.
Religious diversity stems from what? Clearly geographical isolation is part of the cause. In western religion, it seems that schism is a hobby practiced by theologians in great quantity.
Some religions seem to have been created as way to become rich (Scientology), others based upon nebulous beliefs that are hard, if not impossible, to substantiate.
Stating that religion and science are both diverse is not a common attribute based upon the same bases. Baseball sabermetrics are incredibly diverse but no one is comparing them to science or religion. The science-religion axis is a hot bed of special pleading, both ways it seems.