NASA's Laser Retroreflective Arrays (LRAs) revolutionize lunar exploration, providing precise location tracking for lunar landers. These lightweight devices, inspired by road sign reflectors, ensure accurate navigation and docking maneuvers, even in the darkness of space. | Interesting Engineering

China's Tiandu-1 Conducts First Daylight Laser Ranging in Earth-Moon Space FriendsofNASA.org: A Chinese communication and navigation technology test satellite, known as the Tiandu-1, has recently conducted a laser ranging technology test in the Earth-Moon space under strong daylight interference conditions, marking a world first, according to the satellite's developer, China’s Deep Space Exploration Lab (DSEL), on Tuesday, April 29, 2025. Satellite laser ranging measures the distance to orbiting

The Lunar Prospector, launched on January 6, 1998, carried a Neutron Spectrometer to detect hydrogen, suggesting water ice on the moon. Initial findings indicated 300 million metric tons of ice, but later analyses revealed the lunar poles may hold up to 6 billion metric tons, a groundbreaking discovery for future lunar exploration. | The Randall Carlson