Results 291 to 300 of about 21,151,583 (337)
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Evolution of the Planetary System
Astronomy and Astrophysics Library, 2005Gerhard Beutler
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Mechanical systems and signal processing, 2022
The diagnosis and monitoring of surface wear are very critical for the prevention of shutdown and even catastrophic destruction of a geared transmission system.
Xian-Zeng Liu
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The diagnosis and monitoring of surface wear are very critical for the prevention of shutdown and even catastrophic destruction of a geared transmission system.
Xian-Zeng Liu
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Secular Evolution of Hierarchical Planetary Systems [PDF]
Astrophysical Journal, 2003 32 pages, including 8 figures; uses AASTeX v5.0; accepted for publication in ...
Man Hoi Lee
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Macrostratigraphy: Insights into Cyclic and Secular Evolution of the Earth-Life System
Annual Review of Earth and Planetary Science, 2022Rocks in Earth's crust are formed, modified, and destroyed in response to myriad interactions between the solid Earth (tectonics, geodynamics), the fluid Earth (ocean-atmosphere, cryosphere), and the living Earth (evolution, biochemistry).
S. Peters +3 more
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Evolution of Planetary Ringmoon Systems
Earth, Moon, and Planets, 1994The last few decades have seen an avalanche of observations of planetary ring systems, both from spacecraft and from Earth. Meanwhile, we have seen steady progress in our understanding of these systems as our intuition (and our computers) catch up with the myriad ways in which gravity, fluid and statistical mechanics, and electromagnetism can combine ...
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Inchworm Drilling System for Planetary Subsurface Exploration
IEEE/ASME transactions on mechatronics, 2020The physical properties, sequence structure, and heat flow of planetary regolith are important information to enhance the scientific understanding of lunar evolution and the origin of life, as well as for future planetary activities and resource ...
Wei-Wei Zhang +4 more
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Late evolution of planetary systems
Physica Scripta, 2008This chapter discusses some of the main effects of the interaction of planets with remnant planetesimal disks, after the disappearance of the gas. It focuses on planet migration and its possible outcomes. In particular, we discuss the possibility that the migration of the planets leads them into an unstable configuration which changes drastically the ...
Morbidelli, A., Levison, H.F.
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Cosmogonic aspects of the evolution of planetary systems
Advances in Space Research, 1981Fundamental approaches to the problem of the formation of planetary and satellite systems are considered. Emphasis is placed on the hetegony principle and its proposed generalization to a formation principle including the central body, and a restricted actualistic principle.
H. Stiller, D. Möhlmann, H.-J. Treder
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Origin and evolution of planetary systems
Acta Astronautica, 1989Abstract Earth-like planets form due to accumulation of planetesimals in a low mass protoplanetary disk. A star with a disk is created as a result of the collapse of a cloud when the angular momentum J is small enough to permit formation of a star-like core of minimal mass 10 −2 M ⊙ at the cloud centre. However, J must exceed a minimum angular
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Planetary Systems: Origin and Evolution
2014The scenario for the origin and evolution of planetary systems (and in particular, the solar system) is based on fundamental theoretical concepts and astrophysical data involving the process of star formation. Mechanical and cosmochemical properties of the solar system through radioisotope dating place important constraints on such a scenario.
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