China plans to send an unmanned lunar lander similar to previous probes but with a much heavier payload to the far side of the moon. Due to communications issues with the Moon itself blocking transmissions, China will undoubtedly launch a relay satellite in geo-synchronous lunar orbit to transmit data back, scientists say. The Chinese mission is set to determine how much of the rare element Helium -3, which exists in very small quantities on Earth, can be extracted from the purported rich deposits located on the moon's far side. H-3 is a light non-radioactive gas that has the potential to...