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\\ \\ \\ \\
| !! Age of the Universe
!!!!!!
By Jon Covey, B.A., MT(ASCP) \\ Edited by Anita K. Millen, M.D., M.P.H., M.A.
In 1929, Edwin Hubble decided that because the light coming from most galaxies was redshifted, the universe must be expanding after exploding from an infinitesimal volume of super hot, super dense concentration of matter and energy.
The explosion is called the big bang which propelled matter in all directions and at all speeds.
According to the big bang theory, the farther away an object is from us, the more redshifted its light.
Also, a greater redshift means the object is moving away faster than objects with less redshift.
If the universe is not expanding, this cannot be true and the redshift must be due to other causes.
An astronomer can tell how old the universe is by the rate of expansion.
If the redshift is due to something other than expansion, nothing can be said about the universe's age.
Evolutionary astronomers confidently argue the universe is 12-20 billion years old, although there is no certainty about any astronomical observations.
John Eddy, a famous astronomer, once said that there isn't much in the way of observational astronomy that proves the universe is old.
He said that with "frantic theoretical readjustment" if new evidence showed that astronomers have been wrong, they could live with Bishop Ussher's date of 4,004 B.C. [Eddy] !!!!! Redshift and the Age of the Universe
One thing that could show astronomers have been wrong involves discrediting the use of the redshifting of light as evidence for big bang expansion of the universe.
In /Designs and Origins in Astronomy/, [Mulfinger] DeYoung explains the redshift technique for measuring distances to distant galaxies.
If a distant galaxy were moving away from us, the wavelength of the light coming from it would shift to a longer wavelength, the red end of the light spectrum.
According to the big bang theory, the farther away an object is from us, the more redshifted its light.
Also, a greater redshift means the object is moving away faster than objects with less redshift.
This technique does not work for nearby stars.
The calculation of distance involves the redshift velocity inherent in the *Hubble constant*, Ho, the /inferred /rate of the universe's expansion resulting from the big bang.
Ho is around 25-100 kilometers per second for every megaparsec, depending on which techniques one uses to determine the constant and what one's bias is.
One parsec is about 19 trillion miles or 3.26 light-years - a megaparsec is a million times farther.
This means something that is a megaparsec from us is moving away from us about 80 kilometers~/second or 49.7 miles~/second.
In plain language, if the universe is not expanding, we cannot apply the redshift technique to measure distance, speed or time (age of the universe is calculated using v = Hor; v = velocity, r = distance from earth).
!!!!! Does Light Decay According to the Law of Entropy?
What magic quality does light have which prevents it from degrading entropically when everything else does?
If light loses energy due to entropy, it would shift to the red end of the spectrum as energy dissipates.
Is it possible that spent light energy would show up in the celebrated cosmic background radiation?
Astronomers Tom Van Flandern and Halton Arp are not fond of the "tired light" idea, although some of their colleagues are pursuing it more vigorously.
Eric Lerner says that J.P. Vigier has proposed a new term for quantum mechanics in which the vacuum of space absorbs energy as light travels through it.
Lerner carries the ball further and gives alternative explanations for the red shift beside big bang expansion.
[Lerner] However, due to a peculiar quirk of relativity, light might not experience time and no decay due to time dilation.
Recently, different research groups have come up with different Ho values, which when applied inversely to determine the age of the universe, have resulted in estimates that the universe is somewhere between 7 and 16 billion years old.
[Hogan; Jacoby; Cowen, 1994; van den Bergh; Sandage; Chaboyer; Tanvir; Matthews] /Science News /reporter Ron Cowen records David Shramm's (University of Chicago) remark on Nial Tanvir's report which put the age of the universe at 9.5 billion years: {{{"
You have to be very careful about [drawing conclusions] because all of the [Hubble constant] measurements have huge systematic errors.
[Cowen, 1995, p. 166] }}}
Cowen then explains that the discrepancy between Tanvir's estimate on the universe's age and the age of the old white dwarfs suggests that astronomers have come to a crossroads.
Either they have to develop a more complex cosmological model or reexamine how they estimate stellar ages.
Because there are many current estimates on the age of the universe based on observations using the Hubble Space Telescope, one can select the age which bests suits one's bias.
Some Christian astronomers fervently believe in the big bang.
However, there is no clear-cut observation that can discard the 7 billion year age and retain the 16 billion year age.
!!!!! Peculiar Parents and Their Runaways (Quasars)
Halton Arp published a book [Arp, 1966] showing physical connections between galaxies with redshifts indicating they were 100 million light years away (speed ~~1800 km~/sec), and quasars with red shifts showing they were 12 times farther away (speed ~~20,000 km~/sec).
According to big bang expansion, the farther away something is the faster it goes.
The fastest objects are the farthest ones.
Arp argues that the redshifts seen in the light coming from most galaxies do not indicate velocity because the universe is not expanding.
His critics say that chance alone would explain the fortuitous alignment for each of his galaxy and quasar pairs.
Others don't believe such chance alignments could happen so frequently.
One especially good example of the relationship between quasars and the galaxies from which they were ejected is that of the spiral galaxy NGC 4319, and quasar Markarian 205 (see photograph).
Is the quasar a billion light years away from the galaxy or is something wrong with redshift theory?
Perhaps there is no expansion, at least not due to a big bang which never happened.
The large object (A) is spiral galaxy NGC 4319 with a redshift speed of 1,880 km~/s and (C) the bottom center dark object, quasar Markarian 205 with a speed of 21,000 km~/s.
In the actual photograph, (B) the bridge of luminous gas which seems to connect the two is much clearer and more conclusive.
Slide supplied by /National Optical Astronomy Observatories/ (Use of this material does not imply endorsement by NOAO).About 30 years ago, Halton Arp and John Bahcall published a debate in /The Redshift Controversy/, presenting both sides of the argument.
Over the last few years, several astronomers have written books attempting to refute the big bang theory and presenting their theories on the origin and destiny of the universe.
[Lerner; Van Flandern] The astronomers opposed to the big bang are well-known researchers.
Some of them propose that the universe has existed for trillions of years or forever.
Using new findings from the Hubble telescope, they have managed to win converts.
!!!!! Gravitational Redshifting
Elizabeth Praton suggests that the redshift of distant galaxies has two components: the large one is due to big bang expansion, and the gravitational tug of neighboring galaxies generates the small one.
[/Science News/] Einstein correctly predicted that gravity can cause a change in the wavelength of light.
This might have something to do with the recent observations made by Halton Arp.
He noticed that certain types of pinwheel-like galaxies, called Sc I's, have narrower, better defined spiral arms.
Sc I's tend to have higher redshifts than the usual Sc galaxies of the same brightness.
This means Sc I's are farther away from us and moving faster than the Sc's.
When Arp arranged Sc I's in order of increasing distance according to their redshifts, their diameters also grew.
Calculations incorporating redshift and HO data show that the farthest and fastest moving Sc I's are also the largest, larger than the giant Sb galaxy, M81 in Ursa Major.
If M81 and the Sc I named NGC 309 in Cetus are placed at the same distance, the Sc I appears many times larger.
[Arp, 1991] This is strange since Sb galaxies are supposed to be the biggest and brightest galaxies and are used as "standard candles" for determining the distances of galaxies too far away or too dim to measure their redshifts.
!!!!! Thorium~/Neodymium Ratio and Age of Universe
Mitchell Waldrop, a reporter for /Science/, interviewed Harvey Butcher who had discovered an interesting way to determine the age of the universe using essentially the same principles from radiometric dating.
He measured the ratios of thorium (Th) and neodymium (Nd) in the sun and 20 nearby stars spectroscopically.
Analyzing stars' spectral lines to determine the abundance of parent~/daughter ratio is fairly simple.
The stars have done the hard work of preparing the sample by vaporizing these isotopes and mixing them in their atmospheres.
Each element has its own characteristic absorption lines: three for thorium and one for neodymium.
[Butcher] Butcher says: {{{"
What I expected to find was a change in the ratio of thorium to neodymium between the oldest and youngest stars.
[Waldrop] }}}
"Virtually all the original thorium is still there, even in the oldest of the sampled stars", writes Waldrop.
[Waldrop] Butcher expected that the ratio would be as much as two or three times smaller in the older stars, the white dwarfs, because the thorium would have had more time to decay.
What he actually did find, however, was almost no variation in the thorium~/neodymium ratio.
Butcher suggested that, based upon the results of his measurements, the galaxy must be about five billion years younger than previously thought, possibly as young as 8 billion years.
If "virtually all the original thorium is still there", the stars can't have aged much.
I looked at the data published in his 1987 report in /Nature/ and compared the estimated age for each of the stars tested, including our sun, with the actual spectral data.
The Th~/Nd ratios of the sun and the other stars were essentially the same, although the age of some stars was supposed to be 600 million years and others 15-19 billion years.
After Butcher made this information available, Waldrop reports that Schramm was strongly skeptical of it, saying"it was a very uncertain kind of measurement and the results were grossly over-interpreted."
[Waldrop] Schramm's assessment of Butcher's results pivoted on whether Butcher's instruments could read the faint spectral lines representing the concentrations of thorium and neodymium.
Nuclear fusion reactions in supernova and other violent events produce thorium.
To decide how much thorium and neodymium should be present in stars, one has to make assumptions about when and how much thorium was made during the life of the galaxy.
Butcher had to keep his assumptions of thorium production consistent with the abundance of thorium in meteorites and moon rocks because they, too, coalesced from the supernovae products along with the sun and the rest of the solar system.
He says that once a star is born, its outer atmosphere provides an unchanging sample of the general composition of the Galaxy at that time, modified only by the free decay of radioactive species.
[Butcher] Based on these considerations, his conclusion was that the thorium within stars has to be about 10 billion years old or less.
Schramm believes the meteorite data is consistent with 15 billion year old globular clusters which contain the very old white dwarfs.
White dwarfs are believed to have been stars that were 1.2 to slightly less than 1.4 times the sun's mass.
They possibly became red giants as they used up their hydrogen fuel over many billions of years, possibly went through a nova or supernova stage depending on their mass, collapsed to white dwarf stage, and are in the process of radiating their remaining energy before they collapse further to become black holes.
There are several theoretical routes to the white dwarf stage in the life of a star.
[Abell] When Barry Madore and his coworkers studied the Cepheid variable stars and concluded that Hubble's constant must be revised upward to 83 ± 13 km~/s, they reported to the American Astronomical Society that the universe is no more than 10 billion years old.
Schramm said "these are absolutely first-rate astronomers doing a very fine job."
[Croswell] Shramm wasn't the only man of renown who noticed Butcher's report.
William A. Fowler, who won the 1983 Nobel Prize in physics made the opposite remark in the same /Science/ report by Waldrop: {{{"
I am very pleased with Butcher's result.
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