The first space race was defined by symbolic achievements like planting flags and leaving footprints on the moon. Today, the focus has shifted dramatically. The new frontier is about building sustainable infrastructure on the lunar surface, and the key to this endeavor lies in power generation. In April 2025, China announced ambitious plans to construct a nuclear power plant on the moon by 2035, aimed at supporting its proposed international lunar research station. Not to be outdone, the United States, through NASA’s acting administrator Sean Duffy, revealed intentions to deploy a lunar reactor by 2030. While these developments may seem sudden, they are the culmination of years of research and development by NASA and the Department of Energy into small nuclear power systems designed for lunar bases, mining operations, and long-term habitats. From the perspective of space law, this is not an arms race but a strategic infrastructure race, where influence is wielded through the establishment of critical facilities. A lunar nuclear reactor, while dramatic, is neither illegal nor unprecedented. If implemented responsibly, it could enable peaceful exploration, economic growth, and technological advancements for deeper space missions. However, it also raises significant questions about access, safety, and geopolitical influence. The legal framework for such endeavors already exists, with the 1992 UN Principles Relevant to the Use of Nuclear Power Sources in Outer Space providing guidelines for safety and international consultation. The 1967 Outer Space Treaty further governs space activity, emphasizing cooperation and due regard for other nations. Being the first to establish a lunar reactor could set norms for future lunar presence and operations, particularly in resource-rich areas like the moon’s south pole, where water ice could sustain life and fuel rockets. Critics have raised concerns about radiation risks, but adherence to UN safety protocols could mitigate these issues. Solar power, while viable in some regions, is unreliable in the moon’s permanently shadowed craters, making nuclear energy a practical necessity. The deployment of nuclear power on the moon is not just about lunar exploration; it is a stepping stone for missions to Mars and beyond. The United States has an opportunity to lead not only in technology but also in governance by adhering to international guidelines and promoting transparency. The future of lunar exploration will be shaped by who builds what and how, with infrastructure serving as the cornerstone of influence in the next era of space exploration.
分类： science
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Ancient DNA reveals a new group of people who lived near land bridge between the Americas
In a groundbreaking discovery, scientists have uncovered evidence of a previously unknown pod of ancient hunter-gatherers who thrived approximately 6,000 years ago near the land bridge connecting North and South America. This revelation, published in the journal *Science Advances*, sheds new light on the complex migration patterns of early humans across the Americas. The group, identified through ancient DNA analysis, inhabited the high plateaus of present-day Bogotá, Colombia—a strategic location where the two continents converge. Intriguingly, this ancient population does not share close genetic ties with either ancient Native Americans in North America or ancient or modern South Americans, leaving their exact place in the human family tree a mystery. Archaeologist Andre Luiz Campelo dos Santos of Florida Atlantic University, who was not involved in the study, remarked, ‘Up to this point, we didn’t believe there was any other lineage that would appear in South America. This is unexpected.’ By 4,000 years ago, this group had vanished, replaced by a genetically distinct population. The reasons for their disappearance remain unclear, with possibilities ranging from assimilation into a larger group to complete displacement. Further genetic analysis in South America could help determine whether traces of this ancient lineage persist in modern populations. Study author Andrea Casas-Vargas of the National University of Colombia emphasized the significance of the region, calling it ‘the gateway to the South American continent.’ This discovery underscores the importance of the land bridge in the migration and settlement of ancient peoples across the Americas.