On the internal structures of mercury and venus

@article{Lyttleton1969OnTI,
  title={On the internal structures of mercury and venus},
  author={Raymond Arthur Lyttleton},
  journal={Astrophysics and Space Science},
  year={1969},
  volume={5},
  pages={18-35}
}
  • R. Lyttleton
  • Published 1 September 1969
  • Physics, Geology
  • Astrophysics and Space Science
Recent radar measures of the radius and mass of Mercury imply a composition for the planet containing about 60% iron. One or other of two conclusions seems inescapable: either that Mercury is a highly exceptional object among terrestrial planets, or that all measures to date of the planet involve substantial systematic error. In either case the situation is such that independent checking of the radius and mass of Mercury by some entirely different means has become of the greatest importance to… 
Structure of the Terrestrial Planets
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The Solar System: Sun and Planets
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Developments in geophysics
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Explaining Mercury’s density through magnetic erosion
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References

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On the phase-change hypothesis of the structure of the Earth
  • R. Lyttleton
  • Geology
    Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences
  • 1965
The hypothesis that the liquid core of the Earth represents a phase-change at high pressure (and suitable temperature) of the mantle material is further investigated. A more accurate series of
Radar Determination of the Radius of Venus
TLDR
The radius of Venus has been determined from radar-range data taken at the Jet Propulsion Laboratory's Goldstone facility from equations of motion of the solar-system fit to this time-delay data.
The Case for the Radar Radius of Venus
The Venus radius of 6085 � 10 kilometers, deduced from combining observations made with the Venera 4 and Mariner V space probes is incompatible with the value of 6050 � kilometers determined from