TIL lightning strikes can be detected thousands of kilometers away because they propagate in the Earth–ionosphere waveguide. [1] https://en.wikipedia.org/wiki/

TIL lightning strikes can be detected thousands of kilometers away because they propagate in the Earth–ionosphere waveguide. [1] https://en.wikipedia.org/wiki/Radio_atmospheric_signal https://en.wikipedia.org/wiki/Radio_atmospheric_signal [2] https://en.wikipedia.org/wiki/Earth%E2%80%93ionosphere_waveguide https://en.wikipedia.org/wiki/Earth%E2%80%93ionosphere_waveg...