Chandrayaan-1 data shows Earth's electrons are forming water on Moon. Here's how | Mint
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Business News/ Science / News/  Chandrayaan-1 data shows Earth's electrons are forming water on Moon. Here's how
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Chandrayaan-1 data shows Earth's electrons are forming water on Moon. Here's how

High-energy electrons from Earth may be contributing to the formation of water on the Moon. Researchers analysed data collected by India's Chandrayaan-1 mission and found that these electrons are breaking down rocks and minerals on the lunar surface, potentially aiding in the formation of water.

The research, published in the journal Nature Astronomy, found that Earth's electrons may have aided the formation of water on Moon (Reuters)Premium
The research, published in the journal Nature Astronomy, found that Earth's electrons may have aided the formation of water on Moon (Reuters)

High-Energy electrons from planet Earth might be forming water on its satellite Moon, a team of scientists have analysed based on data collected by the successful Chandrayaan-3' s predecessor Chandrayaan-1

The team led by researchers from the University of Hawai'i (UH) at Manoa in the US discovered that these electrons in Earth's plasma sheet are contributing to weathering processes -- breaking down or dissolving of rocks and minerals -- on the Moon's surface.

The research, published in the journal Nature Astronomy, found that the electrons may have aided the formation of water on the lunar body.

Why Water on Moon can be Useful?

Knowing the concentrations and distributions of water on the Moon is critical to understanding its formation and evolution, and to providing water resources for future human exploration, the researchers said.

The new finding may also help explain the origin of the water ice previously discovered in the permanently shaded regions of the Moon, they said.

How did Chandrayaan-1 Discover Water on Moon?

Chandrayaan-1 played a crucial role in the discovery of water molecules on the Moon. Chandrayaan-1 was launched by the Indian Space Research Organisation (ISRO) in October 2008, and operated until August 2009. The mission included an orbiter and an impactor.

The scientists analysed the remote sensing data that were collected by the Moon Mineralogy Mapper instrument, an imaging spectrometer, onboard India's Chandrayaan 1 mission between 2008 and 2009.

How Water formed on Moon?

Solar wind, which is composed of high energy particles such as protons, bombards the lunar surface and is thought to be one of the primary ways in which water has been formed on the Moon.

The team of experts investigated the changes in surface weathering as the Moon passes through Earth's magnetotail, an area that almost completely shields the lunar body from solar wind but not the Sun's light photons.

"When the Moon is outside of the magnetotail, the lunar surface is bombarded with solar wind. Inside the magnetotail, there are almost no solar wind protons and water formation was expected to drop to nearly zero," said Shuai Li, an assistant researcher at the UH Manoa School of Ocean.

They, specifically, assessed the changes in water formation as the Moon traversed through Earth's magnetotail, which includes the plasma sheet.

"To my surprise, the remote sensing observations showed that the water formation in Earth's magnetotail is almost identical to the time when the Moon was outside of the Earth's magnetotail," said Li.

"This indicates that, in the magnetotail, there may be additional formation processes or new sources of water not directly associated with the implantation of solar wind protons. In particular, radiation by high energy electrons exhibits similar effects as the solar wind protons," he explaned.

This finding and the team's previous study of rusty lunar poles indicate that the Earth is strongly tied with its Moon in many unrecognised aspects, the researchers added.

(With PTI inputs)

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Published: 15 Sep 2023, 04:01 PM IST
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