Sept. 30 (UPI) -- A new study published Tuesday suggested that the moon's far side of the moon may be colder than the near side. The study, published in the journal Nature Geoscience, found that rock and soil fragments collected last year by China's Chang'e 6 spacecraft from a "vast" crater on the far side of moon had an interior temperature of 1,100 degrees Celsius, about 100 degrees Celsius cooler than samples found on the near side. "It is one of the great mysteries of the moon," according