Mathematics – Logic
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987eostr..68..111d&link_type=abstract
EOS (ISSN 0096-3941), vol. 68, Feb. 24, 1987, p. 111-113.
Mathematics
Logic
3
Cosmology, Planetary Composition, Solar System, Space Exploration, Asteroids, Comet Nuclei, Mars (Planet), Rare Gases, Venus (Planet)
Scientific paper
The scientific aims and proposed scenarios of sample-return missions (SRMs) to Mars, Venus, comets, and asteroids are reviewed. SRMs are currently being evaluated as natural follow-ons to the NASA remote-sensing orbiter missions of the 1990s. The technological advantages of ground laboratory analysis of returned samples are discussed; and it is argued that SRMs to large evolved bodies can provide a record of (1) the composition of the solar system at different heliocentric distances and (2) the nature of the processes that led to the accretion of small objects (preserved as comets and asteroids) into large planetary bodies. Also considered are NASA research and analysis programs needed to support studies of solar-system origin. It is recommended that planning of SRMs be begun immediately, although they may not be feasible before the year 2000.
Blanchard Douglas P.
Boynton William V.
Drake Michael J.
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