Results 31 to 40 of about 3,964 (181)
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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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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PHOTOGRAPHS OF HALLEY'S COMET MADE AT THE LICK OBSERVATORY [PDF]
, 1910 Heber D. Curtis
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The study of the physics of cometary nuclei [PDF]
The numerical calculations of stability for many possible orbits of the double nucleus for P/Holmes showed that the likelihood of such a precollision history was quite high.
Whipple, Fred L.
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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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Observations of Halley's Comet at Windsor, N.S. Wales [PDF]
, 1911 John Tebbutt
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Excerpts from solar sail concepts and applications [PDF]
Material applicable to Mars missions are excerpted from an earlier study covering a broader range of applications of solar sails. The basic principles of solar sail operation are provided, and the implications on trajectories and mission are discussed ...
Sauer, Carl +2 more
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