Tokyo Metropolitan University Develops Compact X-ray Spectrometer for Lunar Surface Mapping

Researchers at Tokyo Metropolitan University have developed a compact X-ray fluorescence (XRF) imaging spectrometer designed to map the chemical composition of the lunar surface from orbit. This technology utilizes a lightweight, high-resolution X-ray telescope integrated into a satellite to provide detailed geochemical data across the entire Moon.

The instrument identifies elements on the lunar surface by measuring X-ray emissions, a process that allows for precise mapping of the Moon’s geological makeup. By deploying this spectrometer on a lunar-orbiting satellite, the research team aims to collect comprehensive data that was previously difficult to obtain with larger, heavier equipment. The project represents a shift toward using miniaturized instrumentation for planetary exploration, potentially increasing the frequency and scope of future lunar missions.

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Date: June 6, 2026

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