The United States is urging Argentina and Chile to review two Chinese telescope projects planned for the Andean deserts, a development described as part of the broader U.S.-China rivalry extending into astronomy and space-related research. According to reporting from multiple outlets, the U.S. has raised concerns and asked the governments to reassess the projects, which involve telescope installations in remote high-altitude locations. Astronomers and researchers in the region say the reviews could stall or delay ongoing work and may create uncertainty for scientific programs that rely on long planning horizons and sustained funding. The outlets characterize South America as an emerging arena for competition between the two countries, with cooperation in scientific infrastructure becoming entangled with geopolitical considerations. While the reporting focuses on the U.S. request for review and the resulting concern within the scientific community, it does not specify the technical or legal basis for the U.S. concerns in detail. Overall, the situation centers on whether the Chinese telescope efforts in Argentina and Chile proceed, change, or face prolonged delays following the governments’ reassessment.