China finished its first Lunar Laser Ranging (LLR) experiment on Jan. 22, with a 1.2-meter telescope laser ranging system, said the country’s news site huanqiu.com.
A 532-nanometer laser wave with a pulse width of 10 nanoseconds and energy of 3.3 Joule was sent to the lunar retro-reflector left by the U.S. manned mission Apollo 15 from the Yunnan Observatory.