alexa Limits to the expansion of Earth, Moon, Mars and Mercury and to changes in the gravitational constant
Engineering

Engineering

International Journal of Advance Innovations, Thoughts & Ideas

Author(s): McElhinney MW, Taylor SR, Stevenson DJ

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New estimates of the palaeoradius of the Earth for the past 400 Myr from palaeomagnetic data limit possible expansion to less than 0.8%, sufficient to exclude any current theory of Earth expansion. The lunar surface has remained static for 4,000 Myr with possible expansion limited to 0.06%, the martian surface suggests a small possible expansion of 0.6% while the surface of Mercury supports a small contraction. Observations of Mercury, together with reasonable assumptions about its internal structure, indicate that G decreases at a rate of less than 8×10^(−12) yr^(−1), in constant mass cosmologies, and 2.5×10^(−11) yr^(−1) in Dirac's multiplicative creation cosmology.

This article was published in Nature and referenced in International Journal of Advance Innovations, Thoughts & Ideas

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