Interplanetary dust particles ( IDPs ) are an important constituent of the earth ’ s stratosphere , interstellar and interplanetary medium , cometary comae and tails , etc .
Their physical and optical characteristics are significantly influenced by the morphology of silicate aggregates which form the core in IDPs .
In this paper we reinterpret scattering data from laboratory analogs of cosmic silicate aggregates created by Volten et al . ( ( 1 ) ) , to extract their morphological features .
By evaluating the structure factor , we find that the aggregates are mass fractals with a mass fractal dimension d _ { m } \simeq 1.75 .
The same fractal dimension also characterizes clusters obtained from diffusion limited aggregation ( DLA ) .
This suggests that the analogs are formed by an irreversible aggregation of stochastically-transported silicate particles .