what you will soon find inyour research is that they can actually measure substances below the surface.
yep satelites can actually see aquifers under the earths ground
speculators have already been using the tech to find gold/oil rich area's
ecologists have been looking at aquifer depletion over the last decadesions in the next 4 years
These particular findings are not with active sensors such as bistatic radar which does see some meters below the surface.
....
they hope between 2030-2050 to have space mining for precious metals up and running with payload capacity of 150tonnes per trip. imagine it 150tonnes of gold entering the economy each time a space cargo ship re enters earths orbit in ~20 years
bye bye gold prices
gold aggregates on earth totally by sedimentary processes, eg action of water. It will not be found on the moon except as a small component of metal rich deposits.