A country’s airspace does not extend into space. A nation’s sovereignty over its airspace typically ends at the point where outer space begins, but there is no universally agreed-upon boundary between airspace and outer space.
Most commonly, the boundary is considered to be at the Kármán line, which is located at an altitude of 100 kilometers (62 miles) above sea level. Everything below this is generally considered sovereign airspace, while everything above it is considered international space, not subject to any one country’s control.