Viewpoint

Cost–benefit analysis of space exploration: Some ethical considerations

We investigate the impact of U.S. space activity on the environment by Earth orbit level. We exploit the environmental Kuznets framework and apply the two-stage least squares method to time series data collected between 1981 and 2021. The results demonstrate that, while the orbit level does not matter for the launch, the impact on the environment, however, seems to be more notable the higher the orbit level. The results suggest that payloads and rocket bodies degrade the quality of the environment and therefore increase demand for natural resources, contribute to climate change, and increase pollution at all Earth orbit levels.

The on-going space settlement debate has raised questions whether it is possible to settle other planets, and if it was, is it something humans should do. The problem with this space ethical discussion is that it can easily become too vague. To avoid this problem, we suggest a framework for identifying relevant variables that affect the feasibility constraints and desirability factors of establishing space settlements. The variables we focus on include the settlement stage, scale and time frame. Based on the relevant literature, we take mission cost, survival, habitation, water, in situ resources for food, oxygen and fuel energy and dependence on Earth as feasibility constraints that are relevant for the framework. None of them are hard constraints, but rather soft feasibility constraints that make it difficult to establish a permanent human settlement on Mars in the near- to medium-term future. However, in the past, humanity has achieved goals that first seemed infeasible. To justify the costs and effort, the goal must be highly morally desirable. We discuss five different desirability factors that could help justify the effort but as each framework has unique feasibility constraints, not all of these factors are sufficient or necessary to justify this effort. We argue that some of the desirability factors prominent in space ethical literature are not sufficient or necessary in our framework, and thus, we conclude that the normative grounds for establishing a permanent Mars settlement in the foreseeable future are weak.

The possibility of employing human enhancement interventions to aid in future space missions has been gaining attention lately. These possibilities have included one of the more controversial kinds of enhancements: biomedical moral enhancement. However, the discussion has thus far remained on a rather abstract level. In this paper we further this conversation by looking more closely at what type of interventions with what sort of effects we should expect when we are talking about biomedical moral enhancements. We suggest that a more grounded way to picture moral enhancement, at least in the near term, is to envision a form of cognitive enhancement that also provides some moral benefits by heightening the enhanced person's capability for acting according to their own subjective moral code. While this concept of moral adherence enhancement also has relevance for the moral enhancement discussion more widely, in this paper we apply it specifically in the context of space missions. We argue that there are weighty reasons to consider making biomedical enhancements of the proposed kind a mandatory feature of early-phase long-distance space travel because these missions are high-stakes in nature and take place in an environment where the enhancement could be seen as conferring important advantages while negating many of the traditional arguments weighed against it.

Space education from a social science perspective, rather than exclusively Science, Technology, Engineering, and Math (STEM) perspectives, is essential to prepare societies and workforces for humanity's spacefaring future. Interdisciplinary general education courses on space policy have the potential to reach students from more majors than single-discipline courses (such as political science) by enrolling a variety of STEM and business students (among other majors) interested in careers with the space bureaucracy and industry. A case study of a course titled “Toward a Spacefaring Society,” taught from political science, sociological, and economic perspectives, demonstrates through analysis of student assessment and evaluation data that the topic is effective at achieving valuable learning outcomes related to research, communication, methods, and theory in the social sciences. Use of a space theme in a general education course is a promising approach to space education because it differs from the previous emphases in space policy education, which stressed building space knowledge and support by liberal arts majors versus critical, analytical skills that benefit all majors and prepare students for future careers in the space field. Higher education faculty with space-related interests should continue to seek opportunities to offer space-themed courses, including those that fulfill general education requirements and achieve broader learning outcomes.

The completion of initiatives designed to address wicked problems often requires the participation of a variety of actors spanning multiple generations of both individuals and organizations. Until now, frameworks for addressing problems and articulating the sustainability of goals related to overcoming them have yet to adequately account for the timespans required for addressing such problems; particularly as far as the lifecycle of organizations is shorter than such timespans. Here, a framework is presented to articulate the survival of goals to the point of initiative completion under conditions in which it is not assumed that any individual organization or subunit exists long enough to fulfill the requirements for completing such initiatives.

Many countries began satellite development from the beginning of the space era and especially after the Apollo era. Korea started satellite development in 1992 by launching small satellite KITSAT-1 more than 20 years after the Apollo 11 lunar landing. Since then, Korea has developed 15 satellites including eight small satellites, five low earth orbit (LEO) Korean Multi-Purpose Satellites (KOMPSAT), and two geostationary orbit (GEO) satellites. Korea is currently developing KOMPSAT 6 and 7 with advanced optical and radar observation capability, GEO-KOMPSAT 2B, middle-sized Compact Advanced Satellites (CAS), and next generation small satellite (NEXTSat). These efforts will raise Korea's satellite technology to the next level. To prepare strategies for efficient and effective development of satellites, it is essential to elaborately assess the economic impacts of previous satellite development projects and their application. In this paper, we examine the economic impacts of Korea's investment into the research and development of national satellites, and their application in the perspective of satellite value chain. To this end, we conducted a cost–benefit analysis on the development of representative satellites. As non-economic impacts, we examined the change of technology independence and technology level, network building effect, and aerospace ecosystem activation effects.