Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977orion..35..117d&link_type=abstract
Orion, vol. 35, Aug. 1977, p. 117-121. In French.
Astronomy and Astrophysics
Astronomy
Astronomical Models, Cosmology, Gravitational Constant, Stellar Evolution, Stellar Luminosity, Stellar Mass, Angular Momentum, Earth Surface, Planetary Temperature, Surface Temperature
Scientific paper
The constant universal gravitational constant G postulated by Einstein and models allowing modes of variation of G entertained by Dirac, and by Hoyle and Narlikar, are discussed. The Dirac additive creation hypothesis and the Dirac multiplicative creation hypothesis are compared to the Hoyle-Narlikar model, and possible relationships between G, luminosity, and mass are considered. Solar evolutionary history and the earth's temperature are examined for evidence bearing on the models. Appendices treat angular momentum conservation in Hoyle-Narlikar theory, acceleration of lunar longitude, Kepler's third law and the product of G and mass, and solar luminosity and the earth's temperature.
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