Chinese researchers complete Earth-Moon two-way laser link test
Chinese researchers complete Earth-Moon two-way laser link test <br> Researchers have completed a laser communications test between Earth and the Moon, successfully verifying two-way high-speed laser link capabilities in orbit, the Technology and Engineering Center for Space Utilization (CSU) of the Chinese Academy of Sciences said on Friday. After more than a year of in-orbit testing, the team established a two-way laser communication link across a distance of over 400,000 km, marking the expansion of China's space laser communications from near-Earth orbit to deep space. Compared with traditional microwave communications, laser communications offer faster speeds, greater bandwidth, stronger security and more compact hardware. However, enabling laser communications across the Earth-Moon distance required overcoming three major challenges: beam alignment, signal weakness and transmission speed. "Earth-Moon communication is like threading a needle from a t...