The origin of dust in the solar system

Details The origin of dust in the solar system The origin of dust in the solar system

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987rspta.323..421c&link_type=abstract

(Royal Society (London), Philosophical Transactions, Series A, vol. 323, no. 1572, 1987, p. 421-436) IN: Diffuse matter in the s

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Astronomical Models, Interplanetary Dust, Planetary Evolution, Solar System, Zodiacal Dust, Meteoritic Composition, Meteoroid Dust Clouds, Meteoroid Showers, Solar System, Dust, Origin, Formation, Interplanetry Dust, Particles, Samples, Extraterrestrial, Exposure Age, Meteoroids, Models, Comets, Mass, Source, Calculations, Meteors, Theoretical Studies, Analysis

Scientific paper

Theoretical models developed to explain the origin of solar-system dust are examined critically on the basis of recent observational data. Evidence from the exposure ages of stratospheric interplanetary dust particles, the compressive strength of typical fireballs, and observations of a broad ecliptic meteor stream (with numerous short-lived meteoroid swarms) centered on the Taurids is summarized and shown to favor a meteoroidal (rather than meteoritic) model of the present zodiacal cloud. In this model, a large comet which attained an earth-crossing orbit 10,000-100,000 yrs ago and is now defunct produced the present cloud, but the cloud still contains a large meteoroid capable of reactivation as a comet roughly every 1000 yrs. It is suggested that such a comet could bombard the earth with meteoroids of mass 100 Gg or greater, perhaps explaining climate changes and mass extinctions. An observation campaign to search for the large meteoroid is proposed.

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