Believe it or not! Nowadays no one could explain clearly how radio wave radiating or travelling in space. We know that every kind of waves needs the medium for travelling, for example water wave. After the creation of Einstein’s special theory of relativity. Ether, which was used as the medium for radio wave radiation was rule out from existing, that was the problem for radio communication. Now vacuum medium in the concept of’ “Vacuum mechanics” could provide a sensible explanation.(more detail present in
WWW.vacuum-mechanics.com)