"Information cannot be sent directly from the lunar far side to Earth — the moon's bulk gets in the way. Instead, signals are sent from the lunar surface up to a relay satellite called Queqiao, which launched in May 2018 and is hovering in an orbital "parking spot" from which it can communicate with Earth." https://www.space.com/42981-china-moon-far-side-panorama-chang-e-4.html the satellite is the support for radio