China's Yutu 2 rover has made yet another curious discovery during its travels on the far side of the moon, this time turning up a pair of translucent glass globules. Xiao described the new finds as the "first discovery of macro-sized translucent glass globules on the moon." Finding these spheres on the moon suggests that impact events on the other planetary bodies could also form similar impact glasses, Xiao said. And on the moon, Xiao said that such glass spheres should be commonly produced by ancient impacts and could be valuable for understanding early lunar impact history. Xiao and his team believe the small spheres, which are between 0.59 and 0.79 inches (1.5 to 2.5 centimeters) across, were probably formed by relatively recent meteor impacts. Specifically, the researchers believe that the globules formed from anorthosite, a volcanically-formed rock rich in the mineral feldspar, after a high-energy impact melted the rock and ref...