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Topic: Perfect cosmological principle

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	DISF - Interdisciplinary Encyclopaedia of Religion and Science \| Anthropic Principle
		Nevertheless, such a principle is entirely valid only for a certain cosmological “model”, those corresponding to a homogeneous and isotropic universe, in which the study of the space-time on medium and large scale, can legitimately leave out of consideration possible dishomogeneities and non-uniformity on a small and local scale.
		A “perfect Cosmological principle”, a radicalization of the Cosmological principle, claims that all the magnitudes and properties of the universe should be identical if observed not only in whatever spatial point, but also in whatever instant of time.
		A perfect Cosmological principle would ask that the expansion of the universe were counter-balanced by the continual creation of new matter and energy, in a way that assures the constancy in time of the global parameters of the universe, such as its overall structure or the distribution of the matter it contains.
	www.disf.org /en/Voci/31.asp (11283 words)

	Timeline of cosmology: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-09-15)
		The cosmological constant (usually denoted by the greek capital letter lambda: λ) occurs in einsteins theory of general relativity....
		The cosmological principle is a principle invoked in cosmology that severely restricts the large variety of possible cosmological theories:...
		The anthropic principle in its most basic form states a truism: that any valid theory of the universe must be consistent with our existence as carbon-based...
	www.absoluteastronomy.com /encyclopedia/t/ti/timeline_of_cosmology.htm (3454 words)

	~@Com~\|~~BIG BANG THEORY UNDER FIRE~~
		In one of its several variations the big bang cosmological theory is almost universally accepted as the most reasonable theory for the origin and evolution of the universe.
		For a Hubble constant of that value, all of the usual BB cosmological cases (somewhat open, flat or closed) would require the BB to have occurred at about 2/3 of Hubble time, or approximately 6-2/3 billion years ago, which is incompatible with current BB thinking.
		In addition to the apparent imperfection of its perfect cosmological principle, a lack of rationale for either the generation of new matter in space or for expansion of the universe, appears to have caused the failure of old SS theory failed to win acceptance.
	www.nowscape.com /big-ban2.htm (7813 words)

	Cosmology: Methodological Debates in the 1930s and 1940s
		His ‘cosmological principle’, namely, that every cosmologist in the universe should look out upon the same cosmos, was the prime example of such thinking.
		Cosmology is a borderline case: since observations of cosmological significance are so rare and hard-won—Hubble's observation of the red shift was one of the first solid ones—it is very difficult, not to mention brave, to tie one's cosmological theory to Popper's falsificationist principle as a guarantee of scientific acceptability.
		Clearly, PCP is a daring, indeed heroic, interpretation of a methodological necessity.
	plato.stanford.edu /entries/cosmology-30s (7591 words)

	Timeline of cosmology - Wikipedia, the free encyclopedia
		The timeline of cosmology lists the sequence of cosmological theories and discoveries in chronological order.
		The most modern developments follow the scientific development of the discipline of physical cosmology.
		This is confirmed by measurements of the cosmic microwave background radiation by the BOOMERanG experiment
	www.sciencedaily.com /encyclopedia/timeline_of_cosmology (1220 words)

	Search Tuna Report for +universes +cosmology (Site not responding. Last check: 2007-09-15)
		Another reason to expect a cosmological constant is the existence of quantum mechanical vacuum energy....
		The goal of observational astronomy became that of determining the fundamental parameters of the Friedmann-Robertson-Walker model such as the Hubble expansion rate, the mass energy density of the Universe and the de-acceleration parameter....
		The resolution of Olber's paradox is found in the combined observation that 1 the speed of light is finite although a very high velocity and 2 the Universe has a finite age, i.e....
	www.searchtuna.com /ftlive2/1149.html (2095 words)

	Helge Kragh
		“The electrical universe: Grand cosmological theory versus mundane experiments,” Perspectives on Science 5 (1997), 199-231.
		“Classical behavior of macroscopic bodies from quantum principles: Early discussions,” [with Bruno Carazza], Archive for History of Exact Sciences 55 (2000), 43-56.
		John Barrow and F. Tipler, The Anthropic Cosmological Principle (Oxford: Clarendon Press, 1986).
	www.ivh.au.dk /personale/helge_kragh/home.html (7138 words)

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