Yes, NASA is working on reducing sonic booms, but there is still long way to go. Typically that reduction is achieved through change in aerodynamic shape so tha

Yes, NASA is working on reducing sonic booms, but there is still long way to go. Typically that reduction is achieved through change in aerodynamic shape so that sonic waves created by aircraft are modified/nullified. UFO's from reports typically look very unomptimised aerodynamically.