Yutu 2 finds glass sphere, or reveals early history of moon, “who” left it on purpose?

2022-07-16 0 By

New discovery on the moon’s surface: centimeter-scale transparent glass spheres!Chang ‘e-4 is the first human probe to land on the far side of the moon. It was successfully launched on December 8, 2018.On January 3, 2019, chang ‘e-4 made a soft landing on the far side of the moon and the lunar rover Yutu-2 separated from chang ‘e-4.It then began patrolling the far side of the moon.In the fourth issue of Science Bulletin 2022, a team led by Dr. Zhiyong Xiao of Sun Yat-sen University always published a new study entitled “glass Globules on the Moon.In the paper, yutu-2 reported the discovery of “centimeter-diameter translucent glass spheres” on land on the far side of the moon, an international first.Before that, the Apollo astronauts also found glass spheres on the moon with a diameter of centimetres.However, the glass spheres they found were not transparent. They were black in color, with lots of debris and pores inside, unlike the translucent glass spheres they found this time.As we know, glass belongs to amorphous inorganic non-metallic materials, the main chemical composition is silicon dioxide and other oxides, it is not natural, but requires complex production process, roughly the steps are as follows: raw material pre-processing: the raw material is broken, in addition to iron;Compound preparation;Melting: the glass material is heated at high temperature, so that it becomes uniform, no bubble liquid glass (molten state);Molding: the liquid glass according to the needs of processing into the corresponding products;Heat treatment.The key here is the iron removal, the high temperature heating, and the final molding.So the question is, nature doesn’t have these artificial processes, so how did they get there?Who created them?What is the significance of this new discovery?According to the team, this type of translucent glass ball is formed when iron-poor anorthoclase lunar crust melts under high-speed impact, and the molten material cools quickly.That is to say, if the inside of the rock iron content is very low, and because the impact produced high temperature, make become molten rock, there are certain probability to become translucent glass ball, the “iron content is low,” “high temperature” and “molten” actually can also see in glass manufacturing, namely the moon process similar to the production of glass,The two key elements here are rocks with low iron content (silicate minerals) and impacts.The study of these translucent glass spheres could shed light on the moon’s past.So what’s going on here?According to current mainstream research, 4.6 billion years ago, an object called Theia, about the size of present-day Mars, was orbiting close to Earth when it crashed into it.As a result, a lot of material fused into the Earth, and the impact ejected a lot of material, which moved around the Earth and gradually formed the primordial moon under the influence of gravity, and this is the origin of the moon.However, as far as humans are concerned, we only know its origins, but we don’t know anything about the moon’s 4.6 billion year history, especially its early days.To understand this, we can start with lunar rocks, and then we can start with impacts.The current shape of the moon (including its topography and geological evolution) is actually the result of high-speed impacts, which resulted in craters on the moon’s surface.These impacts made the moon look like a “pockmarked face.”Scientists have long known that the moon’s surface is covered by a layer of lunar soil of varying thickness as a result of continuous impacts, which contains large amounts of impact glass.However, the most important component of the impact glass is the “glass beads”, which are much smaller than 1 mm in diameter, allowing scientists to deduce the composition of the lunar soil and the impact history of the lunar surface.And the discovery of the translucent glass ball, much bigger than the glass beads, scientists using its color, shape and output characteristics of the study showed that they are not is the product of the moon’s volcanic activity, is also not dropped from outside of the moon to the moon, they still hit the glass, just composition more special than the glass beads.Further study revealed that these glass spheres may be common to the lunar soil in the lunar highlands.In other words, these “translucent glass spheres” could help scientists understand the impact history of the moon’s early highlands.What’s more, scientists speculate that ancient impact basins formed in the lunar highlands should also have formed such glass spheres, which should carry a lot of information about the impact history of the early solar system.The discovery is therefore a milestone that will allow scientists to learn more about the moon’s early history and bring our knowledge of the moon to a new level.# Yutu-2 discovers centimeter-scale transparent lunar sphere ## Yutu-2 discovers centimeter-scale lunar sphere ## Moon ## China #