Dust in the solar system.

Details Dust in the solar system. Dust in the solar system.

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989znata..44..877f&link_type=abstract

Z. Naturforsch., A, Vol. 44a, No. 10, p. 877 - 882

Computer Science

17

Interplanetary Matter: Cometary Dust, Interplanetary Matter: Origin, Comet 1986 Iii Halley

Scientific paper

Properties of cometary dust particles are better known since the space missions to Comet Halley. Their properties (densities, atomic composition) are compared with relevant observations from lunar microcraters and in-situ experiments. At 1 AU in the ecliptic, 2/3 of the dust grains are normal density particles, presumably of asteroidal origin and irregularly shaped, while the remaining 1/3 are low density particles, presumably of cometary origin, but due to solar irradiation in a processed state. Beyond the asteroidal belt only black cometary dust grains are observed which have recently been released from comet nuclei orbiting on highly eccentric trajectories.

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