Marco Aliberti is a space policy professional with more than ten years of experience in leading research activities at the European Space Policy Institute (ESPI) in Vienna, Austria. As a senior research fellow at ESPI, he has carried out and published a number of research projects in the areas of access to space and space strategy, international relations and governance of outer space, and Asia's space programmes, particularly those of China, Japan, and India.

Dr. Ottorino Cappelli is a senior researcher and lecturer at the University of Naples "L'Orientale", Italy, where he teaches Political Science and Comparative Politics. His long-standing research interests are in the comparative analysis of regime transitions. Over the past few years, his scholarly works have been centered on the establishment of a theoretical-empirical model for defining and assessing the various dimensions of state power.

Dr. Rodrigo Praino is an associate professor of Politics and Public Policyat Flinders University, Adelaide, Australia. A political scientist with expertise in decision-making and political behaviour, he is interested in space politics and space policy, with particular focus on the importance of space assets for defence, economic development, international relations, and decision-making.

Offers an unprecedented classification and comparative assessment of the most active space actors worldwide

Introduces an innovative conceptual framework to measure and classify space actors in a multidimensional context

Provides scholars, space professionals, and policymakers with a toolkit to examine countries' ambitions in space

Introduction.- Conceptualising Space Actors: State And Power In Space.- Measuring Space Actors: A Methodological Framework.- Comparing Space Actors: An Empirical Assessment.