the.com/airspace
The only real estate where the ceiling is the whole point.
means The three-dimensional column of air above a territory that a country legally controls and can restrict others from entering.
from A 20th-century compound of 'air' plus 'space,' coined once powered flight made the sky something nations needed to claim; it entered legal and military vocabulary in earnest with international aviation treaties after World War I, when governments realized the air above their borders needed rules just like the land beneath it.
- sovereignty
- nations own the sky above them, not beyond it
- legal edge
- ends roughly where orbit begins, nobody agreed exactly where
- violation
- drifting a mile off course can trigger fighter jets
- commerce
- airlines pay to cross other countries skies, like tolls