double sonic booms every time you read about a shuttle landing they mention the double sonic booms having taken various relevant classes i have several ideas of where they come from but none of them are very convincing exactly what causes them are they a one time pheneomenon or a constant one like the supersonic shockwave that is constantly produced by a plane but you hear only when it goes over you carlos g niederstrasser only two things are infinite princeton planetary society the universe and human stupidity and i m not sure about the former einstein carlosn phoenix princeton edu space phoenix princeton edu ad astra per ardua nostra
