Results 71 to 80 of about 6,820 (225)
The Perturbations of Halley's Comet in the Past. Third Paper. The Period from 1066 to 1301 [PDF]
, 1908 P. H. Cowell, A. C. D. Crommelin
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The Evolution of Long-Period Comets [PDF]
arXiv, 1997 We study the evolution of long-period comets by numerical integration of their orbits, following comets from their origin in the Oort cloud until their final escape or destruction, in a model solar system consisting of the Sun, the four giant planets and the Galactic tide.
arxiv
The Perturbations of Halley's Comet in the Past. Fourth Paper. The period 760 to 1066 [PDF]
, 1908 P. H. Cowell, A. C. D. Crommelin
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Comet Halley returns: A teachers' guide 1985-1986 [PDF]
This booklet has been put together as an aid for teachers in elementary and secondary schools. It is divided into two distinct parts. The first part is a brief tutorial which introduces some of the most important concepts about comets, including their ...
Bondurant, R. L., Chapman, R. D.
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PHOTOGRAPHS OF HALLEY'S COMET MADE AT THE LICK OBSERVATORY [PDF]
, 1910 Heber D. Curtis
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The International Halley Watch [PDF]
In preparation for the 1985 to 1986 apparition of Halley's Comet, the International Halley Watch (IHW) has initiated a comprehensive program to simulate, encourage, and coordinate scientific observation of the apparition.
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Field Museum of Natural History bulletin. [PDF]
, 1987 v.
Chicago Natural History Museum. +2 more
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Observations of Halley's Comet at Windsor, N.S. Wales [PDF]
, 1911 John Tebbutt
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Report of the Terrestrial Bodies Science Working Group. Volume 8: The comets [PDF]
The determination of the nuclear and atmospheric properties of comets, and the interaction of the solar wind with the comet tail are scientific objectives for a mission to one or more comets in the next decade.
Brandt, J. C. +2 more
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The spectral appearance of comets from 5 to 20 micrometers: A survey of the data [PDF]
Based on the concept of comets as being conglomerates of rocks and ices, it is expected that they reflect these components in their emission spectra. Silicate materials (rocks) are common in many astronomical environments and show prominent features at ...
Bregman, Jesse D.
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