+Subsonic describes speeds below the [Speed of Sound](/wiki/speed_of_sound), where air flows smoothly around an object. It is the realm of most everyday motion, distinct from the faster world of [Supersonic](/wiki/supersonic) travel.
+## See also
+- [Mach Number](/wiki/mach_number)
+- [Aerodynamics](/wiki/aerodynamics)
+- [Flight](/wiki/flight)