Indeed. This occurs with rockets, too. One of my favorite pictures is one of a Saturn V going supersonic. See here: https://en.wikipedia.org/wiki/Vapor_cone#Ga

Indeed. This occurs with rockets, too. One of my favorite pictures is one of a Saturn V going supersonic. See here: https://en.wikipedia.org/wiki/Vapor_cone#Gallery https://en.wikipedia.org/wiki/Vapor_cone#Gallery As that gallery shows, the same effect is in play with nuclear explosions (and any significantly large explosion, really)