Apparently the earth’s magnetic field not only protects us from external influences, but also affects other celestial bodies. 
Joana Campos Meteorized Portugal 03/10/2023 11:00 6 min
A recent study published in the journal Nature Astronomy analyzes how processes in the Earth’s magnetic field can contribute to the formation of water on the lunar surface.
This study was conducted by the University of Hawaii and is part of growing interest in searching for water ice on the lunar surface, Their existence has already been confirmed in the permanently shadowed regions (PSR) of the Moon’s north and south poles due to the Moon’s low axial tilt, which is only 1.5 degrees compared to 23.5 degrees on Earth.
In addition, a better understanding of the water content of the lunar surface could also be achieved Help scientists better understand the formation and evolution of the moon It is currently thought to have formed from a Mars-sized object that collided with Earth about 4.5 billion years ago. i.e. around 100 million years after the earth was formed.
The Earth’s magnetic field could explain the existence of water on the Moon
Earth’s magnetic field, created by the planet’s rotating liquid outer core, is the origin of the existence and development of life on our little blue world. It protects us from harmful solar radiation and space weather that could destroy our atmosphere and cause catastrophic surface damage. This makes it inhospitable to life.
Unlike our atmosphere, which has a spherical shape, the magnetic field is distorted and shaped by the solar wind, This includes a long tail on the night side of the planet that consists of two parts, the plasma layer and the magnetic tail, which is even further away.
Although the solar wind has long been blamed for the formation of water ice on the Moon, This latest study focuses on the plasma layer and the magnetic tail. The team analyzed data collected as the moon passes Earth’s magnetic tail during its month-long orbit.
“This provides a natural laboratory for study the processes of water formation on the lunar surface”, said Dr. Shuai Li, a research associate at the University of Hawaii’s School of Earth and Ocean Science and Technology and lead author of the study. “When the Moon is outside the magnetic tail, the lunar surface is bombarded by the solar wind. Inside the magnetic tail There are virtually no protons from the solar wind and water formation should be almost zero.
The existence of water on the moon
For this study, Dr. Li and his team examined satellite data collected between 2008 and 2009 by NASA’s Moon Mineralogy Mapper (also known as M3) probe aboard the Indian Science Organization’s Chandrayaan-1 spacecraft. Space exploration. They discovered large amounts of water on the lunar surface, on the side of the moon that crosses the Earth’s magnetic tail.
The abundance of water on the lunar surface, Although the Moon is not bombarded by the solar wind as it passes through the magnetic tail, is due to high-energy electrons emanating from the plasma layer of the magnetic field.
The water on the lunar surface is not evenly distributed. It coincides with the side facing our planet.
The team found that the amount of water is increasing in the moon’s mid-latitudes as it enters and exits the magnetic tail, but does not change as the moon passes the center of the magnetic tail. It’s important to remember this The Moon always has one side facing the Earth because it is tidally connected to our planet.
In the future, Li hopes to collaborate with NASA’s Artemis program as part of a lunar mission to study the relationship between Earth’s plasma environment and the amount of water on the surface of the lunar poles.