Results 141 to 150 of about 6,833 (224)
Sublimation rates of carbon monoxide and carbon dioxide from comets at large heliocentric distances [PDF]
Using a simple model for outgassing from a small flat surface area, the sublimation rates of carbon monoxide and carbon dioxide, two species more volatile than water ice that are known to be present in comets, are calculated for a suddenly activated ...
Sekanina, Zdenek
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Old Dad Chiro: his thoughts, words, and deeds. [PDF]
J Chiropr Humanit, 2009 Brown MD.
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Halley's Comet and its Spectrum as observed at Kodaikanal (Plate 20.) [PDF]
, 1910 J. Evershed
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Experimental studies of gas trapping in amorphous ice and thermal modelling of comets: Implications for Rosetta [PDF]
The trapping of mixtures of CO, CH4, N2 and Ar in amorphous water ice was studied experimentally. It is shown that the ice particles could not have been formed at a higher temperature and, subsequently, cool down.
Bar-Nun, Akiva
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Report of the Terrestrial Bodies Science Working Group. Volume 1: Executive summary [PDF]
Current knowledge of Mercury, Venus, Mars, the Moon, asteroids, comets, and the Galilean satellites were reviewed along with related NASA programs and available mission concepts.
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Various collections of comet observational material are discussed in terms of developing a data base.
Giclas, H. L.
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Comet Science Working Group report on the Halley Intercept Mission [PDF]
The Halley Intercept Mission is described and the scientific benefits expected from the program are defined. One characteristic of the mission is the optical navigation and resulting accurate delivery of the spacecraft to a desired point near the nucleus.
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