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Kinematics and Physics of Celestial Bodies, 2009
The paper presents a brief history of cometary cosmogony. It discusses critically the eruptive hypothesis, the hypothesis on the relict origin of comets, and the hypothesis on a genetic connection between comets and trans-Plutonian planets. Laplace’s theoretical prediction as to the capture of long-period comets by Jupiter into short-period orbits is ...
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The paper presents a brief history of cometary cosmogony. It discusses critically the eruptive hypothesis, the hypothesis on the relict origin of comets, and the hypothesis on a genetic connection between comets and trans-Plutonian planets. Laplace’s theoretical prediction as to the capture of long-period comets by Jupiter into short-period orbits is ...
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2013
Originally published in 1953, this book first sets out some observational facts about comets, then the greater part of the book accounts for their origin and explains how comet tails are formed. The text contains 34 photographs of celebrated comets, including eight of Halley's comet. A comet index is also provided.
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Originally published in 1953, this book first sets out some observational facts about comets, then the greater part of the book accounts for their origin and explains how comet tails are formed. The text contains 34 photographs of celebrated comets, including eight of Halley's comet. A comet index is also provided.
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Celestial Mechanics and Dynamical Astronomy, 1992
Reasons for interest in the origin of short-period comets and the difficulties of computing their long-term dynamical evolution are reviewed. The relative advantages of a source region in an extended ‘inner core’ of the Oort cloud or a compact ‘comet belt‘ just beyond the planetary system are finely balanced, and it is premature to consider the problem
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Reasons for interest in the origin of short-period comets and the difficulties of computing their long-term dynamical evolution are reviewed. The relative advantages of a source region in an extended ‘inner core’ of the Oort cloud or a compact ‘comet belt‘ just beyond the planetary system are finely balanced, and it is premature to consider the problem
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Nature, 1973
IN so many fields of astrophysics the textbooks and the ordinary review articles have a tendency to present only the ‘generally accepted’ point of view, often not mentioning alternative theories, and even sweeping under the rug those observational facts which are adverse to the dominant view. This also applies to the theory of comets. As the arrival of
HANNES ALFVÉN, ASOKA MENDIS
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IN so many fields of astrophysics the textbooks and the ordinary review articles have a tendency to present only the ‘generally accepted’ point of view, often not mentioning alternative theories, and even sweeping under the rug those observational facts which are adverse to the dominant view. This also applies to the theory of comets. As the arrival of
HANNES ALFVÉN, ASOKA MENDIS
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2017
It was not only the physical nature of comets that so long remained a mystery. Their origin was also shrouded in obscurity, and the various hypotheses put forward to explain this were to some degree influenced by beliefs about their nature.
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It was not only the physical nature of comets that so long remained a mystery. Their origin was also shrouded in obscurity, and the various hypotheses put forward to explain this were to some degree influenced by beliefs about their nature.
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1981
The possible role of comets in the origin of life is reviewed both con and pro. The former viewpoint stresses our considerable ignorance of the physical and chemical state of comets. The latter position points out the possibility in some comets of an extended thermal history, which might have led to the production of biologically significant ...
Irvine, William M. +2 more
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The possible role of comets in the origin of life is reviewed both con and pro. The former viewpoint stresses our considerable ignorance of the physical and chemical state of comets. The latter position points out the possibility in some comets of an extended thermal history, which might have led to the production of biologically significant ...
Irvine, William M. +2 more
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An Interstellar Origin for Comets
1982It is usually supposed that the outer regions of the Oort cloud have been thermalised by the cumulative effect of stellar encounters and that the long-period comets are perturbed into the inner solar system by passing stars. This heating, or relaxation, is a gentle process, Weissman (1980) for example estimating that only ∿ 9% of the primordial comet ...
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