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Non-standard cosmology - Nucleosynthesis objections to non-standard cosmologies | | Non-standard cosmology - Nucleosynthesis objections to non-standard cosmologies: Encyclopedia II - Non-standard cosmology - Nucleosynthesis objections to non-standard cosmologies | | One of the major successes of the Big Bang theory has been to provide a prediction that corresponds to the observations of the abundance of light elements in the universe. Along with the explanation provided for the Hubble law and for the Cosmic microwave background, this observation has proved very difficult for alternative theories to explain.
Theories which assert that the universe has an infinite age, including many of the theories described above, fail to account for the abundance of deuterium in the cosmos, because deuterium eas ...
See also:Non-standard cosmology, Non-standard cosmology - Non-standard versus standard, Non-standard cosmology - History, Non-standard cosmology - Non-standard cosmologies, Non-standard cosmology - Creationist ideas, Non-standard cosmology - Quasi-steady state, Non-standard cosmology - Tired light, Non-standard cosmology - Variable mass hypothesis and intrinsic redshifts, Non-standard cosmology - Plasma cosmology, Non-standard cosmology - Self Creation Cosmology, Non-standard cosmology - Nucleosynthesis objections to non-standard cosmologies, Non-standard cosmology - Notes, Non-standard cosmology - Bibliography | | | Non-standard cosmology, Non-standard cosmology - Bibliography, Non-standard cosmology - Creationist ideas, Non-standard cosmology - History, Non-standard cosmology - Non-standard cosmologies, Non-standard cosmology - Non-standard versus standard, Non-standard cosmology - Notes, Non-standard cosmology - Nucleosynthesis objections to non-standard cosmologies, Non-standard cosmology - Plasma cosmology, Non-standard cosmology - Quasi-steady state, Non-standard cosmology - Self Creation Cosmology, Non-standard cosmology - Tired light, Non-standard cosmology - Variable mass hypothesis and intrinsic redshifts, General: Cosmology, List of astronomical topics | | |
| | | Non-standard cosmology: Encyclopedia II - Non-standard cosmology - Nucleosynthesis objections to non-standard cosmologies
Non-standard cosmology - Nucleosynthesis objections to non-standard cosmologies
One of the major successes of the Big Bang theory has been to provide a prediction that corresponds to the observations of the abundance of light elements in the universe. Along with the explanation provided for the Hubble law and for the Cosmic microwave background, this observation has proved very difficult for alternative theories to explain.
Theories which assert that the universe has an infinite age, including many of the theories described above, fail to account for the abundance of deuterium in the cosmos, because deuterium easily undergoes nuclear fusion in stars and there are no known astrophysical processes other than the Big Bang itself that can produce it in large quantities. Hence the fact that deuterium is not an extremely rare component of the universe suggests that the universe has a finite age.
Theories which assert that the universe has a finite life but that the Big Bang did not happen have problems with the abundance of helium-4. The observed amount of 4He is far larger than the amount that should have been created via stars or any other known process. By contrast, the abundance of 4He in Big Bang models is very insensitive to assumptions about baryon density, changing only a few percent as the baryon density changes by several orders of magnitude. The observed value of 4He appears to be within the range calculated.
Other related archives1960, 1965, 1970s, 1990s, Active Galactic Nuclei, Age of the universe, Alfven, Anthropic principle, Astrophysics, Big Bang, Bondi, Brans-Dicke theory, COBE, Chandra, Comoving distance, Cosmic microwave background, Cosmology, Creation myths, Creationism, Creationist cosmologies, Creative evolution, Dark energy, Dark matter, De Sitter universe, Dirac large numbers hypothesis, Eddington luminosity, FLRW metric, Friedmann equations, Fritz Zwicky, Galaxy formation, General Theory of Relativity, General relativity, Genesis, Gold, Gravity Probe B, Gunn-Peterson trough, Halton Arp, Hannes Alfvén, Hartle-Hawking boundary condition, Hermann Bondi, Hoyle, Hubble Law, Hubble law, Hubble's law, Inflation, Jayant Narlikar, Lambda-CDM model, Large-scale structure, List of astronomical topics, Lyman-alpha forest, Mach's principle, Machian physics, New Scientist, Nucleosynthesis, Observable universe, Old Earth creationists, Omphalism, Particle physics, Penzias, Pioneer anomaly, Plasma cosmology, Population III stars, Quantum gravity, Redshift, Robert Wilson, Self creation cosmology, Shape of the universe, Strong Cosmological Principle, Sunyaev-Zeldovich effect, Timeline of cosmology, Timeline of the Big Bang, Ultimate fate of the universe, Universe, University of Durham, WMAP, X-ray sources, Y.P. Varshni, Young Earth Creationists, Zwicky, absolute magnitudes, abundance of light elements, accretion disks, ambiplasma model, astronomer, astrophysicists, bad science, big bang, black-body spectrum, blackbody, brane cosmology, chaotic inflation, clouds of neutral hydrogen, correlations, cosmic inflation, cosmic microwave background radiation, cosmological, cosmological distances, cosmological principle, cosmological redshift, cyclic model, dark energy, dark matter, deuterium, dynamical friction, earth, ekpyrotic model, flatness problem, frequency, fringe science, galaxies, galaxy surveys, general relativistic, globular clusters, gravitational lensing, helium, horizon problem, inflation, junk science, magnetic monopoles, modern geocentrism, modified Newtonian dynamics, non-constant speed of light, nuclear fusion, phantom energy, physical cosmology, power spectrum, prediction, pseudoscience, quasar, quasars, quasi-steady state, quintessence, redshifts, reionized, sky surveys, small number statistics, standard cosmology, statistically significant, steady state, steady-state theory, string landscape, theory, thermalized, time dilation, tired light effect, tired light model, universe, white hole, ΛCDM model
 Adapted from the Wikipedia article "Nucleosynthesis objections to non-standard cosmologies", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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