CRAF Mission: an opportunity for exobiology

Details CRAF Mission: an opportunity for exobiology CRAF Mission: an opportunity for exobiology

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esse.nasa..215n&link_type=abstract

In NASA. Ames Research Center, Exobiology in Solar System Exploration p 215-228 (SEE N93-18545 06-51)

Biology

Comet Nuclei, Comet Rendezvous Asteroid Flyby Mission, Exobiology, Halley'S Comet, Dust, Molecules

Scientific paper

The Halley missions of 1986 gave us a first, quick glimpse of a comet nucleus and the first in situ measurements of cometary gas and dust. Many of our basic ideas about cometary nuclei were confirmed while a number of startling new discoveries were also made. However, in many respects the very fast Halley flybys raised more questions than they answered. We learned, for example, that comets contain a large amount of organic material but we were unable to determine precisely which organic molecules were present. We learned, too, that the nucleus of a comet is a dark, irregularly shaped body, but we could determine very little about the physical state and structure of the ices and grains within the comet nucleus.

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