Yutu no. 2 found the transparent glass sphere, “who” left it?What’s the secret of the far side of the moon?
According to a new study published in The journal Science Bulletin , astronomers at Sun Yat-sen University in China report that the Yutu-2 lunar rover has discovered several new centimeter-scale transparent glass spheres on the far side of the moon, a world first in space history.So, who left these marbles?What is the dark side of the moon hiding?On Earth, apart from the sun, the moon is the largest and brightest object we can see with our naked eyes.As the moon moves around the Earth, the positions of the sun, the earth and the moon are constantly changing relative to each other, causing the part of the moon that is illuminated to change with them, so we see the moon waxing and waning.A full moon occurs when the moon moves on the side of its orbit away from the sun, putting Earth between the sun and the moon.At this time, we can see the round face of the moon, which looks like a white jade plate.If you look closely at the full moon of each lunar month and compare it, you will see the same image on each full moon. There is no difference in the black part of the moon, with the toad and the Jade Rabbit.But the moon is a sphere, and the moon itself spins on its axis, so why can’t we see the other side?This happens because the moon’s rotation and revolution are perfectly synchronized, with both periods being 27.321 days, exactly the same.Because of this unique synchronous rotation, the other side of the moon, the far side of the moon, is not visible from Earth.Although many probes have been sent to the moon before, and even 12 astronauts have been to the lunar surface, but on the moon’s face, there has never been a probe on the far side of the moon.It wasn’t until early 2019 that China’s Chang ‘e-4 successfully landed on the far side of the moon for the first time, followed by Yutu-2.Yutu-2 has carried out a series of probes on the moon and made many important discoveries.This time, Yutu 2 found several glass beads, some of which looked very round and transparent, incongruous with the grey and barren surface of the moon.Many of you may have played marbles or marbles in various colors when you were a child, and these are artificially made.By melting glass fragments or natural ores at high temperatures to create a molten glass solution, which can then be processed to create a variety of glass spheres.And there are no people on the moon, no life, and “who” made those glass balls?Was there a civilization on the ancient moon?According to a series of studies, the moon remained desolate, with no atmosphere, no magnetic field, and no conditions at all to support life.The ancient moon could not have been habitable, with no life or civilization.In fact, these glass balls form naturally.After research, Chinese astronomers pointed out that these glass spheres were created by the impact of celestial bodies.The moon’s surface rocks are dominated by plagioclase, a silicate mineral.When asteroids or comets hit the moon’s surface at high speed, the heat generated would melt the rocks.The molten material then solidifies quickly, forming transparent glass spheres.The moon’s surface is pockmarked with craters left behind by massive impacts.There are fewer craters on this side of the moon’s surface, mainly in the relatively flat mare.The far side of the moon, facing away from Earth, has been hit by more objects, leaving behind dense craters.In fact, Apollo astronauts found glass spheres on the moon and were amazed by what they saw.The glass spheres Apollo astronauts brought back from the moon were mostly larger and tended to be dark and opaque.By comparison, the glass sphere found by Yutu 2 is smaller and more transparent.Yutu-2 has been orbiting the far side of the moon for more than three years, far exceeding its expected life span of three months, covering a total distance of more than 1,000 meters.Because the far side of the moon is difficult and full of lunar dust, Yutu 2 cannot travel very fast, so in three years, yutu 2 did not stray very far from the landing site.Still, when yutu-2 made its first-ever trip to the far side of the moon, it sent back a series of first-hand messages that shed light on the mysterious far side of the moon.As yutu 2’s exploration of the far side of the moon continues, more discoveries await. Zhiyong Xiao, Pan Yan, Bo Wu, et al. Always glass Globules on the Moon, Science Bulletin, 2022, 67,355-358.