Apollo’s missions from NASA returned samples of the moon rock to scientists to study. We have learned a lot over the contracts that followed, but there is still a permanent mystery. Many of these lunar samples show signs of exposure to strong magnetic fields similar to the Earth’s Earth, however the moon does not have such a field today. So, how did the moon rocks get magnetic?
There were many attempts to explain this anomalies. The latest comes from the scholars of the Massachusetts Institute of Technology, who argue in New paper It was published in the magazine of Science develops that the influence of the great asteroid has briefly strengthened the weak magnetic field of the moon – and that this height is what was recorded in some samples of the moon.
Evidence obtained from the tropical spacecraft notes, as well as The results were announced Earlier this year from China CHANG’E 5 and Chang’e 6 Tasks, largely consistent with the presence of at least a weak magnetic field on the early moon. But where did this field come from? These are usually formed in planetary bodies as a result of dynamic, as molten minerals start in pregnancy thanks to the slow waste of heat. The problem is that the essence of the small small moon had a cloak that was not cooler than its essence, so there was no heat pregnancy to produce a strong dynamo enough.
There were proposed hypotheses on how the moon was developing a basic dynamo. For example, 2022 analysis He suggested that in the first billion years, when the moon was covered in molten rocks, the giant rocks were formed and the magma was cooled and harden. Dip minerals sank into the nucleus while these lighter formed a shell.
Over time, the authors argued that the titanium layer crystallized directly below the surface, and because it was more intense than the lighter minerals under it, that layer ultimately stormed the small points and sank across the scarf (capsized gravity). The difference in the temperature between the cold sunken rocks and the thermal load resulting from the foundation, which creates a strong magnetic fields – and shows the reason for the presence of some rocks in this magnetic signature and others not.
Or perhaps there is no need for a magnetic field that dynamic is at all. For example, authors Study 2021 Previous analyzes of the moon samples have been changed during the operation. They re -examined samples from the APOLLO 16 1972 mission using Co2 The laser to heat it, thus avoid any change in magnetic tankers. They concluded that any magnetic signatures in these samples can be explained through the effect of meteorites or comets that hit the moon.
