Physics
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.302...11s&link_type=abstract
In its Physics and Mechanics of Cometary Materials p 11-15 (SEE N90-19989 12-90)
Physics
Acquisition, Approach, Comet Nuclei, Core Sampling, Esa Spacecraft, Mission Planning, Chemical Properties, Comets, European Space Programs, Mechanical Properties, Nasa Space Programs, Projects, Return To Earth Space Flight, Technologies
Scientific paper
The Rosetta/Comet Nucleus Sample Return (CNSR) mission is described in terms of scenario, spacecraft concept, comet approach, sampling, return to Earth and Earth approach and re-entry phase. The preparatory program of ESA and NASA to provide new technologies is discussed. The prime scientific objective is to return a comet nucleus sample to Earth while preserving such fundamental properties as: the chemical and isotopic composition of the individual molecular species of remaining volatile compounds; the chemical, isotopic and structural state of the individual phases and crystals constituting higher temperature condensates and aggregates; and the preservation of complex hydrocarbon compounds and their aggregates. The sample will allow the study of the most primitive material in the solar system and the physical and chemical processes that marked the system's beginning, and hopefully will establish correspondence between interstellar matter, cometary material and primitive meteorites already, collected.
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