“…In this context, in the Special Issue's feature paper [1], the authors present a review of the experimental and simulation activities performed in a research laboratory, describing the main findings and underlining the importance of such activities for better understanding the space debris problem. The importance of experimental facilities is also addressed in [2], where the authors introduce advances in the technologies currently employed in hypervelocity testing. Both the complexity and the advantages of numerical simulations are well addressed in [3]; the authors describe the analysis of heterogeneous materials subjected to impacts and present the simulation of single-and multiple-space-debris impacts.…”