that is a good point, i always forget about the ionospheric plasma. however, there is going to be some amount of outbound re-radiation from the plasma. the soun

that is a good point, i always forget about the ionospheric plasma. however, there is going to be some amount of outbound re-radiation from the plasma. the sound quality by the time you get to alpha centauri is going to lousy but any alien civ capable of coming over here and sucking up our precious atmosphere is probably going to have good enough spectroscopy and computing to reconstruct our morning zoo broadcasts and judge that we are not worthy to have nitrogen.