Results 41 to 50 of about 4,010 (185)

Report of the Terrestrial Bodies Science Working Group. Volume 8: The comets [PDF]

open access: yes
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
core   +1 more source

87th Annual Meeting of the Meteoritical Society 2025: Abstracts

open access: yes
Meteoritics &Planetary Science, Volume 60, Issue S1, Page 30-350, August 2025.
wiley   +1 more source

Excerpts from solar sail concepts and applications [PDF]

open access: yes
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
core   +1 more source

Report of the Terrestrial Bodies Science Working Group. Volume 9: Complementary research and development [PDF]

open access: yes
Topics discussed include the need for: the conception and development of a wide spectrum of experiments, instruments, and vehicles in order to derive the proper return from an exploration program; the effective use of alternative methods of data ...
Fanale, F. P.   +3 more
core   +1 more source

The 10 micron spectral structure in comets [PDF]

open access: yes
The 10 micron spectra of comets Halley (1982i), Wilson (1986l), Kohoutek (1973f) and Bradfield (1987s) are presented and compared. The silicate emission profiles of Halley and Bradfield are seen to be remarkably similar in that both contain a sharp break
Campins, Humberto   +2 more
core   +1 more source

Comparison of the 3.36 micrometer feature to the ISM [PDF]

open access: yes
It has been noted that the 3.36 micrometer emission feature is not the same as that of any ISM band at 3.4 micrometer. This is documented herein. There is no convincing analog to the cometary 3.36 micrometer emission feature seen in the Interstellar ...
Brooke, Timothy Y., Tokunaga, Alan T.
core   +1 more source

Ion propulsion and Comet Halley rendezvous [PDF]

open access: yes
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.
core   +1 more source

Polarimetric observations of comet Levy 1990c and of other comets: Some clues to the evolution of cometary dust [PDF]

open access: yes
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
core   +1 more source

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