will eventually relay information form its moon rovers. They are intent on exploring
the far side of the moon, and set up an inhabited spacelab by 2022.
Interestingly, we actually see more than 50% of the moon's surface and only some
41% is always hidden. This is because the moon engages in 'libration", a form of
oscillation.
The satellite is headed for Lagrange-2, a point beyond the moon of relative stability given
the play of masses of the sun, earth and moon system.
(Lagrange points are in reference to a system of two bodies of large size, exerting
Newtonian gravitational forces one on the other. In a special case situation, a third body - of negligable mass, - will orbit the stronger planet at the same speed as the second planet,
if it is at a critical point. The second planet is thus dragging it along, making it move
more slowly at L1, and more quickly at L2. The Sun and Earth are such a two body system;
and the Earth and Moon are another...)
https://www.msn.com/fr-ca/actualites/monde/la-chine-va-explorer-la-face-cachée-de-la-lune/ar-AAxzrM5?li=AAgh0dy
https://www.space.com/40646-china-queqiao-moon-relay-satellite-launch.html
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