The rapid expansion of commercial space activities has outpaced the international legal framework originally designed for government-led exploration. As private companies undertake launches, reentries, and increasingly ambitious missions, the need for updated, coherent regulations has become urgent. This article examines how international laws are evolving to address the unique challenges posed by commercial spaceflight, focusing on launch and reentry operations.

Historical Foundations of Space Law

The current international legal regime for outer space was established during the Cold War, primarily by the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS). Four core treaties form the backbone of space law:

  • The Outer Space Treaty of 1967 – Establishes that space is free for exploration and use by all states, prohibits national appropriation of celestial bodies, and holds states responsible for national space activities, whether governmental or non-governmental.
  • The Rescue Agreement of 1968 – Requires states to assist astronauts in distress and return them to their launching state.
  • The Liability Convention of 1972 – Imposes absolute liability on a launching state for damage caused by its space objects on Earth or to aircraft in flight, and fault-based liability for damage in space.
  • The Registration Convention of 1976 – Requires states to register objects launched into space with the UN.

A fifth treaty, the Moon Agreement of 1984, has been ratified by only a handful of nations and is not considered part of customary international law. These treaties were crafted when space actors were exclusively states, and they assume a single "launching state" responsible for all activities. Commercial operations—involving multiple jurisdictions, private liability, and reusable vehicles—expose gaps that the original framers never anticipated.

How Commercial Launch and Reentry Challenges the Existing Framework

Today, companies like SpaceX, Blue Origin, Rocket Lab, and Virgin Galactic routinely launch payloads, crew, and even space tourists. These operations raise distinct legal issues that the old treaties fail to address cleanly:

  • Airspace vs. outer space – There is no internationally agreed boundary between airspace (sovereign) and outer space (free). Launch and reentry trajectories cross through both, creating jurisdictional questions. For example, a rocket ascending over another state's airspace may require overflight permissions that are not covered by standard aviation or space law.
  • Reentry across borders – While launches typically occur from a single nation's territory, reentries can end in another state's airspace or territorial waters. The Liability Convention covers damage on Earth, but it does not address right-of-passage, risk-sharing, or coordinated emergency response for reentry debris zones.
  • Private operator licensing – States license private entities under national law (e.g., the US Federal Aviation Administration's Office of Commercial Space Transportation), but there is no international standard. This leads to a patchwork of requirements, making it difficult for companies to operate globally and creating potential safety and liability conflicts.
  • Space debris mitigation – Commercial constellations (e.g., Starlink) and launch vehicle debris increase orbital clutter. The existing treaties only indirectly address debris through general obligations to avoid harmful contamination, but they lack binding post-mission disposal rules.

"The space law regime we have is essentially a product of the 1960s. It's elegant for its time, but it was not built for an era where a private company can launch hundreds of satellites per year." — UNOOSA Office for Outer Space Affairs

Understanding the limitations of existing law is critical to appreciating the direction of new regulations.

State Responsibility and Private Actors

Article VI of the Outer Space Treaty requires states to authorize and continuously supervise the activities of non-governmental entities in space. This "supervision" burden has led to national regulatory regimes, but it also means that a state is internationally responsible for the actions of its private companies. If a commercial rocket collides with another spacecraft, the launching state—not the private firm—faces liability under the Liability Convention. This disconnect can dissuade states from allowing innovative, risky missions and leaves private operators without direct international accountability.

Liability Regime Inadequacies

The Liability Convention's absolute liability for damage on Earth works well for traditional launches where the risk is fairly low and defined. However, for high-frequency operations like suborbital tourism or point-to-point rocket transport (Earth-to-Earth), the risk profile changes. A space tourist flight that fails over an ocean may pose lower risk, but one that deviates over a populated area raises questions about shared liability, insurance requirements, and state indemnification. The convention does not provide for graduated liability tiers or caps, which are common in other transportation sectors.

Lack of International Safety Standards

While aviation has the International Civil Aviation Organization (ICAO) to set global safety and operational standards, no equivalent body exists for commercial space flight. The International Telecommunication Union (ITU) coordinates spectrum and orbital slots, but launch and reentry safety is left to national regulators. This can result in inconsistent certification, mutual recognition issues, and higher risks when vehicles traverse multiple airspace systems.

Awareness of these gaps has spurred several initiatives at the international level.

UNOOSA and COPUOS Guidelines

COPUOS has been the primary forum for discussing space governance. In 2019, it adopted the Guidelines for the Long-Term Sustainability of Outer Space Activities (LTS Guidelines). These are voluntary but provide a framework for states to adopt national measures regarding space debris mitigation, collision avoidance, and information sharing. Many commercial launch operators now voluntarily follow these guidelines, and some states incorporate them into licensing conditions.

Additionally, UNOOSA administers the Space Law for New Space Actors project, offering capacity building for states that wish to draft national space legislation. This indirectly harmonizes regulatory approaches, though it cannot impose binding rules.

The Artemis Accords

Signed by over 40 nations (as of 2025), the Artemis Accords are not a treaty but a set of bilateral agreements based on the Outer Space Treaty. They emphasize transparency, interoperability, and safety for lunar activities—including launch and reentry phases. Important provisions include:

  • Commitment to register all space objects.
  • Release of scientific data.
  • Glossary of safety zones around operations to prevent interference.
  • Mutual assistance in emergency reentry or landing scenarios.

While focused on the Moon, the Accords set a precedent for coordinated rules among commercial partners and could be extended to Earth orbit launch and reentry practices.

ICAO's Evolving Role

ICAO has begun studying the interface between aviation and space operations. In 2018, it released a manual on space operations and air traffic management. The key challenge is integrating space launch and reentry trajectories into global air traffic control without disrupting aviation safety. ICAO is discussing potential standards for:

  • Launch and reentry notification procedures for civil aviation authorities.
  • Contingency planning for reentry debris over international airspace.
  • Safety management systems for commercial space operators intersecting with air traffic.

Any eventual binding standards would likely require a new annex to the Chicago Convention, a process that could take a decade.

Private Sector Self-Regulation and Insurance

In the absence of robust international law, the insurance industry plays a de facto regulatory role. Underwriters require operators to meet rigorous safety standards and disclose risk assessments. The emergence of the "space insurance pool" for liability during launch and reentry creates market pressure for safe operations. However, this is not a substitute for public international law, as it does not address cross-border rights or state liability.

Key Areas Where International Law Is Evolving

Liability and Insurance Requirements

Several states have updated national liability frameworks to require third-party liability insurance for commercial launches. The US FAA requires operators to carry $500 million in coverage for maximum probable loss; the UK's Space Industry Act 2018 mandates similar. While not uniform, these national laws are converging on a model that caps private liability based on risk assessment, with the state absorbing excess liability. The Liability Convention could be amended (unlikely) or supplemented by a new protocol that defines caps and allocation for commercial actors. Some legal scholars propose a "Space Liability Protocol" modeled after the nuclear liability conventions.

Safety Standards for Launch and Reentry

COPUOS has begun discussing a working group on "launch and reentry safety standards." Topics include:

  • Minimum safety case requirements for vehicles (human-rating standards for commercial crew).
  • Trajectory planning to avoid population centers and high-traffic airspace.
  • Real-time data sharing between launch providers and air traffic control.
  • Post-flight debris disposal and reentry burn-up criteria.

Most of this remains aspirational, but a non-binding "Code of Conduct for Commercial Space Launch and Reentry" could be adopted within five years.

Environmental Protection: Space Debris and Atmospheric Impact

The proliferation of small satellites and frequent rocket launches intensifies two environmental concerns: orbital debris and reentry emissions. The LTS Guidelines request states to ensure that launch vehicles and satellites have a post-mission disposal plan (25-year rule for deorbiting). However, many commercial missions do not comply. A new international "Debris Mitigation and Launch Impact Standard" is being debated, which would require:

  • Registry of all objects larger than 10 cm.
  • Mandatory collision risk assessments before launch.
  • Limits on the number of fragments created during reentry (to avoid harming marine ecosystems).
  • Bi-annual reporting to a new UN space traffic coordination system.

China, the EU, and Japan have proposed a binding treaty on space debris, but the US and Russia have resisted. Industry groups, such as the Space Safety Coalition, have published best practices that many commercial operators sign onto voluntarily.

Frequency Spectrum and Orbital Slot Allocation

Commercial launch and reentry do not directly involve spectrum, but they affect orbital slot management. Large constellations (Starlink, OneWeb) require careful coordination to avoid collisions and radio interference. The ITU is updating its Radio Regulations to address "spacecraft separation" and "collision avoidance maneuvers" as part of service licensing. For launch operations, the primary concern is telemetry and command frequencies. Interference can cause loss of vehicle or misrouting, so the ITU is working on harmonized bands for commercial launch vehicles (e.g., 2200-2290 MHz and other bands).

Future Directions: Binding Treaty or Soft Law?

The trajectory of international law for commercial space activities appears to favor a hybrid approach: a mix of binding treaties on core issues (liability, registration, and debris) and soft law guidelines on operational matters (safety, airspace integration, atmospheric protection).

One ambitious proposal is a "new comprehensive convention on space activities" that would replace or update the Outer Space Treaty and its progeny. However, political realities make this unlikely in the near term. More plausibly, we will see:

  • A binding protocol on space debris cleanup – requiring operators to carry bonds for eventual removal of their vehicles.
  • An international licensing board – perhaps under UNOOSA or ICAO, to certify commercial launch providers for cross-border operations.
  • A unified liability and insurance convention – establishing a global fund for third-party claims, similar to the Warsaw or Montreal systems in aviation.
  • Regional agreements – such as the EU Space Regulation, which already sets liability insurance and safety rules for commercial launches from European spaceports (like Kourou and Andøya).

"The next decade will determine whether the commercial space industry grows under a coherent global rulebook or faces a fragmented, risky environment that hinders progress. The choice is ours." — Space.com analysis

Conclusion

International space law is at a critical juncture. The existing treaties provide a foundation but are insufficient for the complexities of commercial launch and reentry operations. Through forums like COPUOS and initiatives such as the Artemis Accords, states and private actors are gradually developing new norms. The most pressing areas—liability, safety, debris mitigation, and airspace integration—are being addressed through a combination of voluntary guidelines, national regulation, and industry best practices. A fully binding regime remains elusive, but the momentum toward harmonization is growing. For the commercial space sector to thrive sustainably, the international community must continue to evolve legal frameworks that balance innovation with safety, environmental protection, and shared responsibility.