Mar 10, 2019
4 min read
There May Be a Quadrillion Dollars Laying About on the Moon
The solar wind sweeps out from the Sun in every direction. The Earth is protected from this sleet of particles and energy by the magnetic field that surrounds the planet. The Moon enjoys no such protection. For the last three billion years it has been bombarded by the particle laden breeze, hence the presence of Helium-3 on the Moon.
