THE QUESTIONS. “The theme poses three fundamental questions: 1) What is the origin of the Matter-Antimatter asymmetry in our Universe? 2) What is the particle nature of Dark Matter and does it contribute to the cosmic radiation? 3) Which is the origin, the acceleration and the propagation mechanism of Cosmic Rays?”
https://link.springer.com/content/pdf/10.1007/s10686-021-09708-w.pdf