Look up the definition of the von Karman line, which is used as the demarcation. Basically, it is the boundary above which velocity lift is provided by orbital effects, and below which it is provided by aerodynamic effects. Not arbitrary, but functional.
Outer space is an arbitrary term anyway...
Pretty sure it's agreed upon to mean the space beyond our atmosphere.
Doesn't make it any less arbitrary though.
Look up the definition of the von Karman line, which is used as the demarcation. Basically, it is the boundary above which velocity lift is provided by orbital effects, and below which it is provided by aerodynamic effects. Not arbitrary, but functional.
That's cool i get it. But i still disagree.