Tesla was a genius because way before anybody knew or even understood the earth and what we call today the ionosphere, which is a layer of ionized particles about 80 kilometers above the earth ...

Here, it can be ionized by low-energy electrons ... contributing to efforts to protect Earth's ozone layer in the coming decades. More information: M. Dinger et al, Differential elastic scattering ...

The ionosphere, a layer of ionized plasma extending from 50 to 1,500 km above Earth, significantly impacts Global Navigation Satellite System (GNSS) signals by introducing positioning errors.