The delineation between Earth’s environment and outer area will not be a hard and fast boundary however reasonably a gradual transition. The idea typically refers back to the altitude at which atmospheric results turn into negligible for sure sensible functions, corresponding to aerodynamic flight. For example, above a sure altitude, typical plane can not generate ample raise as a result of air’s thinness.
Understanding this boundary is crucial in aerospace engineering, area legislation, and meteorology. It informs the design of spacecraft and plane, the authorized framework governing actions in area, and the research of atmospheric phenomena. Traditionally, defining this boundary has been important for establishing nationwide airspace sovereignty and regulating the usage of area.