Three-body Capture of Interstellar dust by the Solar System

The rate of three-body capture of interstellar dust by the solar system is less than $$1\,\times\,{10}^{4}\,\text{g}\,\text{s}^{-1}$$ assuming the density of interstellar dust is $$3\,\times\,{10}^{-26}\,\text{g}\,\text{cm}^{-3}$$ and the typical heliocentric velocity of the dust is $$20\,\text{km}\,\text{s}^{-1}$$ . This rate is two orders of magnitude smaller than that calculated by Radzievskii and the rate of loss from the zodiacal cloud determined from the Poynting-Robertson effect by Whipple. Therefore we cannot substantiate Radzievskii's conclusion that interstellar dust can maintain the zodiacal dust cloud.