Results 61 to 70 of about 83,906 (254)
Report of Comet Committee 1909-1913 : with index catalogue of all photographs of Halley's Comet [PDF]
, 1915 George C. Comstock
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Extended performance solar electric propulsion thrust system study. Volume 1: Executive summary [PDF]
Several thrust system design concepts were evaluated and compared using the specifications of the most advanced 30 cm engineering model thruster as the technology base.
Hawthorne, E. I., Poeschel, R. L.
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Ion propulsion and Comet Halley rendezvous [PDF]
Cometary rendezvous missions using ion propulsion is considered. The characteristics of the ion engine are discussed including the fuel efficiency and acceleration, and the design of the ion engine is described.
Atkins, K. L.
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The ESA mission to Comet Halley [PDF]
The Europeon Space Agency's approximately Giotto mission plans for a launch in July 1985 with a Halley encounter in mid-March 1986 4 weeks after the comet's perihelion passage.
Reinhard, R.
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Polarimetric observations of comet Levy 1990c and of other comets: Some clues to the evolution of cometary dust [PDF]
The evolution with the phase angle alpha of the polarization degree P of light scattered by comet Halley's dust is well documented. No significant discrepancy is found between Halley and Levy polarization curves near the inversion point.
Hadamcik, E. +2 more
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86th Annual Meeting of the Meteoritical Society (2024)
Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
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Long slit spectroscopy of NH2 in comets Halley, Wilson, and Nishikawa-Takamizawa-Tago [PDF]
Long-slit spectra of comets Halley, Wilson and Nishikawa-Takamizawa-Tago were obtained with the 3.9 meter Anglo-Australian Telescope. Spectra of comets Halley and Wilson were obtained with the IPCS at a spectral resolution of 0.5 A and a spatial ...
Heyd, Rodney +5 more
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Determination of the observation conditions of celestial bodies with the aid of the DISPO system [PDF]
The interactive system for determining the observation conditions of celestial bodies is described. A system of programs was created containing a part of the DISPO Display Interative System of Orbit Planning.
Kazakov, R. K., Krivov, A. V.
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