Opportunities for ballistic missions to Halley's comet [PDF]
Alternative strategies for ballistic missions to Halley's comet in 1985-86 are described. It is shown that a large science return would be acquired from a ballistic Halley intercept in spite of the high flyby speeds of almost 60 km/sec that are ...
Farquhar, R. W., Wooden, W. H., II
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Scientific rationale and strategies for a first comet mission. Report of the Comet Halley science working group. An executive summary [PDF]
The justification, scientific objectives, instrumentation, and strategy for a first comet mission are discussed. Topics include: mission target; rendezous, propulsion system requirements, measurement objectives, instrument capabilities for rendezvous ...
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On predictions and laws in biological evolution: Is biology able to formulate general laws and develop inductive predictions as in physics or chemistry?: Is biology able to formulate general laws and develop inductive predictions as in physics or chemistry? [PDF]
EMBO Rep, 2022 Rull V.
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Designing dual-plate meteoroid shields: A new analysis [PDF]
Physics governing ultrahigh velocity impacts onto dual-plate meteor armor is discussed. Meteoroid shield design methodologies are considered: failure mechanisms, qualitative features of effective meteoroid shield designs, evaluating/processing meteoroid ...
Bamford, R., Chen, R., Swift, H. F.
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Monthly Notices of the Royal Astronomical Society, 1991 It is suggested that the outburst suffered by Comet Halley (1986 III) in early 1991 February, was caused by the ejection from the nucleus of 1.4 × 10 13 g of dust, this being about 0.02 per cent of the cometary mass. The energy required was in the range 2 × 10 19 to 2 × 10 23 erg.
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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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Influence of solar activity upon light curves of comets P/Halley (1986 3) and P/Churyumov-Gerasimenko (1982 8) [PDF]
It is shown that the comet P/Halley's (1986 3) total magnitudes correlate with changes in the solar activity indices and the solar wind velocity. A statistically reliable correlation between the outbursts of brightness and magnitude variations of the ...
Churyumov, Klim I., Filonenko, V. S.
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Edmond Halley's Contributions to Hydrogeology. [PDF]
Ground Water, 2021 Deming D.
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Coordinated programs for comet Halley [PDF]
Symposium - International Astronomical Union, 1986 Because comets are so difficult to observe, it is essential to coordinate observations from a variety of telescopes in order to fully understand their behavior. The apparition of Comet Halley represents a unique opportunity for coordinated programs because this is the only predictable comet which is routinely bright enough for the many observational ...
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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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