China launches world's first three-satellite constellation in Earth-moon space

China has established the world's first three-satellite constellation based on the Distant Retrograde Orbit (DRO) in the Earth-moon region of space, according to the Chinese Academy of Sciences (CAS) on Monday. Developed under the CAS class A strategic priority program "Earth-Moon Space DRO Exploration," the three satellites have stably established million-kilometer-level inter-satellite measurement and communication links in this region of space. More

(Source: Ecns.cn - Apr 17)