High-energy electrons in Earth's magnetic tail may form water on the moon

High-energy electrons from the solar wind are weathering the moon and giving rise to water on the lunar surface.

The theory connects water to the magnetic bubble that surrounds the Earth called the magnetosphere.

As the moon orbits Earth , it passes through the magnetotail, which shields the moon from charged particles.

The research could also explain how water gathers in pockets that never see sunlight.