Particle Concentration in the Asteroid Belt from Pioneer 10

See allHide authors and affiliations

Science  25 Jan 1974:
Vol. 183, Issue 4122, pp. 320-321
DOI: 10.1126/science.183.4122.320


The spatial concentration and size distribution for particles measured by the asteroid/meteoroid detector on Pioneer 10 between 2 and 3.5 astronomical units are presented. The size distribution is from about 35 micrometers to 10 centimeters. The exponent of the size dependence varies from approximately -1.7 for the smallest to approximately -3.0 for the largest size measured.