flat, while the far side is thic
heir body. So we need to understand that,"
he said.Johan Koehler, head of Solar System Sci▓ence and Space Situational Awareness, Swedish▓ National Space Agency, said exploration of the far side of the moon was a great achievement by China. "We are very happy to be a ▓part of it.""There is a theory that water on the surface of the moon is formed by the interaction of solar wind with the surface regolith. So this is something that Swedish scientists together with Chinese scientists want to answer," said Koehler.The Chang'e-4 mission, including the probe, the relay satellite Queqiao and a micro satellite orbiting the moon, is equipped wi▓th four payloads developed through in