Clarify the accretion pathway from cosmic dust to larger bodies

Clarify the physical processes by which micron- and sub-micron-sized cosmic dust particles accrete into progressively larger objects in astrophysical environments, resolving the current incomplete understanding of this growth sequence.

Background

In discussing the origin of solid material in planetary systems, the authors note that growth from cosmic dust to larger bodies is fundamental yet remains insufficiently characterized.

They emphasize that while dust originates from various astrophysical sources (e.g., interstellar clouds, stellar explosions, red giants) and is transported by stellar winds into the interstellar medium, the detailed accretion processes leading from dust to macroscopic bodies are not fully understood.