Determine the nature of dark matter

Determine the fundamental nature of dark matter, specifying its composition and interactions and whether it consists of macroscopic composites (such as primordial black holes, solitons, or strangelets) or new weakly interacting particles, in order to resolve its identity within modern physics.

Background

The paper explores the possibility that dark matter is composed of macroscopic, high-mass objects with very low number density, a paradigm distinct from weakly interacting particle dark matter. It proposes using Ganymede as a natural detector for macroscopic dark matter impacts, arguing that the moon's differentiated structure and long surface age could record distinctive signatures.

This framing situates their paper within the broader context that, despite extensive searches and constraints across multiple mass ranges and interaction types, the fundamental identity of dark matter remains unresolved.