Zodiacal Dust: Measurements by Mariner IV

Science  10 Sep 1965:
Vol. 149, Issue 3689, pp. 1240-1241
DOI: 10.1126/science.149.3689.1240


Data from the Mariner IV dust-particle experiment reveal an increase by a factor of 5 in the flux of interplanetary dust particles as the heliocentric distance from the sun increases. There is a variation in the slope of the cumulative flux-mass distribution, with the steepest slope for the distribution occurring between the planets. No enhancement of the flux in the vicinity of Mars was detected.