I guess there's really a slippery, spectrum definition of "space." FL3300, FL2600, etc. The Kármán line (FL3300) could be considered "space" since it's roughly

I guess there's really a slippery, spectrum definition of "space." FL3300, FL2600, etc. The Kármán line (FL3300) could be considered "space" since it's roughly where aerodynamic lift is no longer possible.