With different countries ascribing to different theories of air space
and outer space law, Dr. Bittencourt Neto proposes in this Brief a
reassessment of the international law related to the extension of state
territories vertically. Taking into consideration the vast number of
proposals offered by scholars and diplomatic delegations on this subject
matter, as well as the principles of comparative law, a compromise to
allow for peaceful development is the only way forward. The author
argues for setting the delimitation of the frontier between air space
and outer space at 100 km above mean sea level through an international
treaty. This would also regulate passage rights for space objects during
launchings and reentries, as long as those space activities are
peaceful, conducted in accordance with international law and respecting
the sovereign interests of the territorial State. Continuing expansion
of the commercial space industry and conflicting national laws require a
stable and fair legal framework best adjudicated by the United Nations,
instead of allowing a patchwork system to persist. The proper framework
for developing such regulation is carefully discussed from all angles
with a practical recommendation for policy-makers in the field.