Black aurora seen on a Hurtigruten cruise voyage in Norway. (Image credit: Future/Daisy Dobrijevic) via Space.com A lot of people see the northern lights as a beautiful sight, but for scientists they also

Neither fully Earth nor space, the ionosphere reacts both to winds and weather from the lower atmosphere below and solar energy streaming in from above, changing constantly to form conditions we call space

Practically everywhere. Radio waves are produced simply when you pick up electrical charges and accelerate or brake them. As simple as that. Actually an antenna is a relatively easy thing, it's a piece