Results 261 to 270 of about 7,037,410 (298)
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STRUCTURE OF PLANETARY ATMOSPHERES
AIAA Journal, 1963The temperature, composition, pressure, and other properties of the atmospheres of Earth, Mars, Venus, and Jupiter are reviewed in the light of the most recent observational results. Several models for the Venus atmosphere are described. (D.L.C.)
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2011
Models of the interior structure of a ▶ planet or ▶ satellite give the variations of thermodynamic state variables as functions of radius (starting at the center) or depth (starting at the surface). The thermodynamic state variables are pressure, temperature, density (or specific volume), and the concentration of chemical species.
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Models of the interior structure of a ▶ planet or ▶ satellite give the variations of thermodynamic state variables as functions of radius (starting at the center) or depth (starting at the surface). The thermodynamic state variables are pressure, temperature, density (or specific volume), and the concentration of chemical species.
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2002
Abstract The material in a given orbit coalesces into a planet for reasons that are not completely clear and, in the case of the Earth, the planet probably underwent a meltdown. The energy for this process came from gravitational potential energy, kinetic energy of the components, heat of radioactive decay and radiant energy from the sun.
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Abstract The material in a given orbit coalesces into a planet for reasons that are not completely clear and, in the case of the Earth, the planet probably underwent a meltdown. The energy for this process came from gravitational potential energy, kinetic energy of the components, heat of radioactive decay and radiant energy from the sun.
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Interpretation and analysis of planetary structures
Journal of Structural Geology, 2010Structural geology is an integral part of planetary science. Planetary structures provide the framework for determining the character and sequence of crustal deformation while simultaneously establishing the observational basis required to test geodynamic hypotheses for the deformation of planetary and satellite lithospheres.
Schultz, Richard +4 more
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Planetary structures in general relativity
pure and applied geophysics, 1972For a static single-zone planet assuming that 1) the pressure and density are connected by the equationP =K Q 1+1/n–s, 2) a complete spherical symmetry is preserved and the system is in hydrostatic equilibrium; in section II, the expressions for the field equations have been obtained in suitable dimensionless forms.
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The Fine Structures of Planetary Nebulae
Astrophysics and Space Science, 2000Most theoretical studies of the dynamics of planetary nebulae assume that the slow ejecta from the red-giant or asymptotic giant branch phase of evolution of the central star is distributed smoothly. We consider briefly the observational evidence for small scale structure in both neutral and ionised PNe gas, examine some of the ways it can be generated
J.E. Dyson +3 more
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Harnessing legal structures of virtue for planetary health
Journal of Medical Ethics, 2023Humans and other species depend on the planet’s well-being to survive and flourish. The health of the planet and its ecosystems is under threat from anthropogenic climate change, pollution and biodiversity loss. The promotion of planetary health against entrenched degradation of nature urgently requires ethical guidance.
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Peripheral Structures of Planetary Systems
Solar System Research, 2004We analyze the conditions for the formation and time evolution of peripheral comet structures of solar-type planetary systems. In the Solar system, these include the Kuiper belt, the Oort cloud, the comet spear, and the Galactic comet ring that marks the Galactic orbit of the Sun. We consider the role of the viscosity of a protoplanetary gas–dust disk,
A. V. Tutukov, M. A. Smirnov
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The internal structure of planetary bodies
Contemporary Physics, 1972Abstract Each planet in the Solar System is represented as a mechanically spherical cold body, possibly in rotation. It is seen that, on this basis, the properties of the planets can be understood within the already established principles of the physics of matter under high pressures.
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Modeling of the planetary structure of the ionosphere and the protonosphere coupling
pure and applied geophysics, 1988A planetary model of the ionosphere and the protonosphere coupling is described. The system of three-dimensional nonstationary modeling equations of continuity and motion for the ions O+ and H+ is presented. Some numerical results of model calculations are compared with the experimental data.
Yu. S. Saenko +2 more
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