A vapor cone, also known as shock collar or shock egg, is a visible cloud of condensed water which can sometimes form around an object moving at high speed through moist air, for example an aircraft flying at transonic speeds https://t.co/igThZuum2m [gif: https://t.co/YJmr7RMNx6] pic.twitter.com/z7oOabuDML

— Massimo (@Rainmaker1973) December 2, 2019