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Cosmology is a branch of astronomy that deals with the origin, structure and space-time relationships of the universe. It is derived from two Greek words, cosmos meaning "universe" or "order," and logos meaning "word." Creation cosmology encompasses not only the observable physical or natural world but also the metaphysical means by which God governs and sustains creation. Cosmology therefore deals with time and seeks to understand God's relationship with His creation, from the beginning to the end of time. The commonly accepted age of the universe is far beyond what a typical creation scientist would countenance. In response, several young universe creation cosmologies have been proposed.
- Main Article: Cosmic center
- Main Article: Geocentricity
Geocentricity is the belief that the Earth is located at the center of the universe. Biblical creationists generally view the creation of the cosmos as an Earth-centered event, and the space beyond our world created simply to "declare the glory of God" (Psalm 19:1 ). Therefore, it is largely assumed the Earth is at the relative center of the cosmos.
However, most creationists have abandoned the notion that the Earth is at the literal center of the universe, largely because the mathematical corrections that geocentricity requires (epicycles, eccentrics, and equants) make geocentricity far too complex than is warranted.
- Main Article: Galactocentricity
- All objects in the universe beyond our galaxy have a red shift in their spectrum. None have a blue shift, which would imply an approaching object.
- The degree of redshift varies directly as the distance of the object from our galaxy (Hubble's Law).
- Quantized redshift, or the organization of extragalactic objects into distinct bands, is the strongest single observation that suggests galactocentricity.
Cosmic Center Universe
Robert Gentry has also suggested an anthropocentric cosmology, based on a static universe with a shell of matter creating cavity energy in our region. His theory is sophisticated and appeals to gravitational and relativistic red shift caused by vacuum gravity repulsion.
The theory is explicated in detail in several papers available at the Orion Foundation. Andrew Repp, a creationist, has posted a challenge to his cosmology in the Creation Society Research Quarterly. Gentry responds to this and other criticism in Big Bang Collapse and other reports found on his Published Reports Page. Brian Pitts has also criticized Gentry's model.
- The seminal paper describing Gentry's view is A New Cosmic Center Cosmology. He claims a collection of several things this theory either accounts for or explains:
- The Hubble Redshift Equation
- A CBR Relation fitting all known CBR data
- The recently discovered velocity dipole of radiogenic galaxies
- The time dilation of SNe Ia time curves
- The Sunyaev-Zeldovich Thermal Effect
- Olber's Paradox
- A modified Tolman relation
- SN dimming for Z<1
- Enhanced brightness of SN for Z>1 that fits SN 1997ff findings
- The existence of extreme [z>10] objects (this separates it qualitatively from Big Bang)
- The high Fe/O ratios found in BAL quasar, which Gentry claims to be contrary to current cosmology
- It should be noted that Gentry's model is predictive in nature. He looks for the observation of very distant objects, which are predicted by his model but not for current cosmologies. He also used the model to predict with some accuracy the size of the vacuum energy density parameter before it was measured.
The fine-tuned universe is an argument made by theists and creationists for the existence of God. Because the earth is in such a perfect position in the solar system in which life can be supported, and because there is no life observed anywhere else in the universe, such perfection demands intelligence.
Atheists and evolutionists argue that this argument is not valid, due to the fact that the universe is merely "randomly" going in the right direction, and that life could have arisen under different conditions. There are a number of problems with this objection, however. The first is that there is no life found anywhere else in the cosmos, not even on Mars, whose conditions are closest to those of Earth. In order to argue that Earth's conditions are not the only ones required for life, evolutionists must show how there is life in an environment totally different from ours, which is quite impossible. Secondly, evolutionists cannot even show that life came about under Earth's conditions, let alone in some different environment. That being said, the "fine-tuned universe" argument stands as an argument for the existence of outside intelligence.
(The recent findings, by the Phoenix lander on Mars, of large quantities of water ice and soil that can grow terrestrial vegetables, indicate that conditions on Mars are probably much closer to those of Earth than astronomers previously supposed. The hydroplate theory, which includes a suggestion that about one percent of the water on Earth was ejected into space during the global flood, could easily explain the water ice and would even explain the findings of any microbes on Mars. Furthermore, any evolutionist who cites this news as evidence in favor of the ubiquity of life must explain why Mars is host only to microbes and not to forests, garden meadows, or a civilization.)
Age of the Cosmos
- Main Article: Cosmic chronology
The currently estimated age of the universe is far beyond what a typical creation scientist would countenance. In response, several young universe cosmologies have been proposed to address the issue of age.
White Hole Cosmology
- Main Article: White hole cosmology
A white hole near the earth at the beginning of the universe has been proposed to explain the existence of distant starlight in a young universe. This would cause, due to relativistic considerations, a change in apparent time. While this setup is acceptable to those assuming a creationist paradigm, it can be attacked on anthropocentric grounds by secular science. Russell Humphreys, the author of this cosmology, has been criticized by those upset by his model. A repository of criticism and his response can be found here.
- Main Article: Cosmological relativity
Dr. John Hartnett has developed a young Earth creation cosmology based on Dr. Moshe Carmeli's theory of cosmological relativity. Like Russell Humphreys' white hole cosmology, it uses time dilation in a bounded universe. But this dilation results from a rapid expansion of space rather than the gravity of a white hole. Thus it explains a persistent criticism of the white-hole model, namely that if our galaxy were at the bottom of a gravity well, then incoming light should display a blue shift, not a red.
Hartnett’s cosmology readily explains the large scale structure of the universe without either dark matter or dark energy. In addition, it readily explains how starlight from far-distant objects can reach a young earth.
C-decay proposes a continuously changing speed of light, which would explain both the age of the universe (and earth) due to radiometric dating, and also indicates that the doppler shift, the common method of dating far objects, is not caused by kinematic or relativistic red shift. This cosmology has the merit of explaining quantized red shift, which present cosmologies fail to do. However, John Hartnett points out that c-decay would predict that the stars would "disappear" from our sky and then "reappear," something to which that neither the Bible nor any other historical record testifies.
- So Long, Eternal Universe; Hello Beginning, Hello End! by Bert Thompson, Ph.D. Apologetics Press.