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As humanity enters a new golden age of space exploration, the United States is leading a global effort to establish “rules of the road” for this frontier. The Artemis Accords are a U.S.-led, non-binding set of principles designed to guide international cooperation in civil exploration and peaceful use of outer space.
Their central goal is creating a common vision for safe, transparent, and sustainable exploration of the Moon, Mars, and beyond for all humanity’s benefit. Directly linked to NASA’s Artemis program—which aims to land the first woman and first person of color on the Moon—the Accords serve as the diplomatic framework for one of history’s most significant space exploration efforts.
Back to the Moon: The Artemis Program Foundation
The Artemis Accords cannot be understood without first understanding the monumental program they support. The Artemis campaign is NASA’s multi-stage effort to return humans to the Moon and ultimately send astronauts to Mars. Its objectives are sweeping: conduct new scientific discovery on the lunar surface, advance technologies needed for long-duration spaceflight, foster a new lunar economy, and establish sustainable human presence on another world.
The program’s architecture relies on a new generation of powerful hardware. This includes the Space Launch System (SLS), the most powerful rocket ever built; the Orion spacecraft, designed to carry astronauts on deep-space missions; the Lunar Gateway, a small space station that will orbit the Moon and serve as a staging point for missions; and commercial Human Landing Systems, such as SpaceX’s Starship version, contracted to ferry astronauts from lunar orbit to the surface.
The campaign is planned in phases, beginning with the successful uncrewed Artemis I test flight in 2022, followed by Artemis II, a crewed lunar flyby, and Artemis III, which will mark the first human lunar landing since Apollo 17 in 1972.
International Partnerships Are Essential
Achieving these goals is a challenge of immense technical and financial scale. With NASA’s projected Artemis costs expected to reach $93 billion between 2012 and 2025, agency officials have been clear that international partnerships are not just beneficial but “critical” to the program’s long-term success and sustainability.
The Artemis Accords serve as the foundational agreement enabling this global collaboration, creating a shared operational framework that makes complex international hardware integrations possible.
Concrete contributions from international partners are already underway. The Canadian Space Agency is providing Canadarm3, an advanced robotic arm for the Lunar Gateway. The European Space Agency is building the Gateway’s primary habitat module and the service module for the Orion spacecraft. The Japan Aerospace Exploration Agency is contributing components and logistics support for the Gateway.
These contributions, secured under the Accords umbrella, represent billions of dollars in shared costs and bring essential technology and expertise to the program.
Why New Rules Are Necessary
The original legal framework for space, the 1967 Outer Space Treaty, was drafted during the Cold War when space was the exclusive domain of two superpowers. The 21st-century space environment is vastly different. It’s a crowded, complex arena featuring dozens of national space agencies and a burgeoning private sector, with companies like SpaceX and Blue Origin now conducting their own missions.
This new reality demands more detailed practical guidelines. The Accords were created to fill this gap, aiming to “increase the safety of operations, reduce uncertainty, and promote the sustainable and beneficial use of space for all humankind.”
The program’s high costs and extended timelines are also products of its history. Key components like the SLS rocket and Orion capsule are not entirely new but carryovers from previous, canceled NASA programs such as Constellation and the Asteroid Redirect Mission. While this approach leverages decades of investment, it also means the program is constrained by legacy designs and contracts, contributing to budgetary pressures that make international partnerships—and thus the Artemis Accords—essential.
The Ten Core Principles
The Artemis Accords are built on ten core principles ranging from reaffirming long-standing international law tenets to establishing new norms for modern space activities. Some principles are straightforward restatements of existing treaties, while others represent deliberate U.S.-led interpretation of ambiguous space law clauses, designed to enable a new era of commercial space activity.
1. Peaceful Purposes
All activities must be for peaceful purposes. This directly reflects and reinforces the 1967 Outer Space Treaty, which prohibits establishing military bases, testing weapons, and conducting military maneuvers on the Moon and other celestial bodies.
2. Transparency
Signatories commit to openly sharing their national space policies and exploration plans. The goal is reducing misperceptions and preventing confusion or conflict between the growing number of space actors. This principle calls for higher openness levels than the Outer Space Treaty, which only required sharing information “to the greatest extent feasible and practicable.”
3. Interoperability
Partners will work to make their space systems compatible with one another. This includes common standards for docking ports, communication systems, and power systems. For complex, multi-national projects like the Lunar Gateway, where modules from different agencies must connect seamlessly, interoperability is a practical necessity.
4. Emergency Assistance
This principle reaffirms signatories’ obligations under the 1968 Agreement on the Rescue of Astronauts. It commits nations to render all possible assistance to astronauts in distress, recognizing them as envoys of humankind.
5. Registration of Space Objects
To promote safety and accountability, the Accords reinforce the 1975 Convention on Registration of Objects Launched into Outer Space. Signatories must register their space objects with the United Nations, helping track objects in orbit and identify which nation is responsible for them.
6. Release of Scientific Data
Signatories commit to making the scientific data they gather publicly available in a timely manner. This ensures discoveries made through Artemis missions can benefit researchers and the public worldwide, not just participating nations.
7. Preserving Heritage
This novel principle in space law commits signatories to preserve humanity’s outer space heritage. This includes protecting historically significant sites, such as Apollo landing sites, as well as human or robotic artifacts and other evidence of past celestial body activity.
8. Space Resources
Perhaps the most significant and controversial principle, this section addresses the use of resources found in space, such as water ice at the Moon’s poles. The Accords state that extraction and utilization of space resources are critical for sustainable exploration. Crucially, they affirm the U.S. position that doing so “does not inherently constitute national appropriation” under the Outer Space Treaty. This provides legal certainty that commercial companies need to invest in developing mining technologies.
9. Deconfliction of Activities
To avoid harmful interference, signatories agree to provide public information about their operations’ location and nature. The Accords introduce “safety zones” concept—temporary areas around a nation’s operations where other actors are expected to coordinate before entering. This is intended to protect operations, such as mining sites or scientific experiments, from accidental disruption.
10. Orbital Debris
The final principle commits nations to mitigate orbital debris creation. This includes planning for safe, timely, and efficient spacecraft disposal at mission end to ensure space remains a sustainable environment for future generations.
Together, these principles, particularly those concerning interoperability, space resources, and deconfliction, are not just about safety and science. They are foundational legal and technical pillars required to build a future lunar economy and what NASA calls a “robust lunar marketplace.”
Legal Foundation and Controversies
The United States has consistently positioned the Artemis Accords not as replacement for existing space law but as modern implementation of it. The legal foundation for all space activities remains the 1967 Outer Space Treaty, a landmark agreement that established outer space as the “province of all mankind,” free for exploration and use by all nations, and explicitly banned any “national appropriation” of the Moon or other celestial bodies by sovereignty claim.
The U.S. argues that the Accords simply “operationalize” the OST’s broad principles for 21st-century activities, providing a practical pathway for implementation that the original treaty lacked. However, this interpretation has generated significant international debate, centered on two key flashpoints.
Legal Flashpoint 1: The Right to Mine the Moon
The most contentious issue is the right to extract and own space resources. Article II of the OST forbids “national appropriation,” but it’s ambiguous on whether this ban on owning territory also prohibits owning resources extracted from that territory.
The Artemis Accords codify the long-standing U.S. interpretation: while no nation can claim sovereignty over the Moon, a nation or private company can own, use, and sell the resources it extracts. This position is often compared to international maritime law, where no one owns the high seas, but commercial fishing fleets own the fish they catch.
This policy didn’t originate with the Accords. It was first enshrined in U.S. domestic law with the 2015 Commercial Space Launch Competitiveness Act and reinforced by a 2020 Presidential Executive Order. The Accords represent the diplomatic effort to elevate this national policy into an internationally accepted norm.
This move strategically circumvents the 1979 Moon Treaty, a separate UN agreement that declared lunar resources the “common heritage of mankind” and proposed a complex international regime to govern their exploitation and share benefits. The U.S. and other major spacefaring nations never ratified the Moon Treaty, viewing it as a barrier to commercial development. The Accords are a deliberate effort to create an alternative legal framework that rejects the “common heritage” principle and establishes a pro-commercial precedent through widespread practice of its many signatories.
Legal Flashpoint 2: “Keep-Out” Zones in Space
The second major legal debate point is the “safety zones” concept. The Accords present these zones as a practical way to implement Article IX of the OST, which requires nations to have “due regard” for others’ activities and avoid “harmful interference.” In practice, a nation could declare a temporary zone around its lunar base or mining operation, requiring others to consult and coordinate before entering.
Critics fear these safety zones could become a form of de facto appropriation. While not sovereignty claims, they could function as “keep-out” zones granting a single nation or company exclusive use of a particular lunar surface area, effectively fencing off valuable territory. The lack of a clear, multilateral mechanism for designating these zones has raised concerns about a potential “land rush” where the first to arrive can claim the most resource-rich locations.
This approach represents a significant shift in how international space law is developed. Instead of pursuing slow, consensus-based treaty through the United Nations, the Accords utilize a flexible, non-binding agreement among a “coalition of the willing.” This strategy of “adaptive governance” aims to establish norms through practice first, with the large coalition of signatories’ actions then shaping development of future, more formal international law. It’s a shift from the traditional “legislate then act” model to a more pragmatic “act then legislate.”
Growing Global Coalition
The Artemis Accords were launched on October 13, 2020, with eight founding signatories: Australia, Canada, Italy, Japan, Luxembourg, the United Arab Emirates, the United Kingdom, and the United States. Since then, the coalition has expanded at remarkable pace. As of mid-2025, the number of signatories has swelled to 56 nations, demonstrating the Accords’ significant diplomatic momentum.
This coalition is notable for its geographic and political diversity. It includes traditional U.S. allies and established space powers like France, Germany, and Japan; major emerging spacefaring nations such as India, Brazil, and South Korea; and countries from every inhabited continent, including the first African signatories, Nigeria and Rwanda.
This rapid growth is key to U.S. strategy. Proponents argue that with the number of signatories now representing a majority of UN Committee on the Peaceful Uses of Outer Space (COPUOS) members, the Accords’ principles have achieved “true global consensus.” This creates powerful political momentum to establish the Accords as the de facto international standard for space behavior.
Signing the Accords is a political commitment to the principles and doesn’t automatically mean a country is contributing hardware to Artemis missions. The Accords are open to any nation, even those without active space programs. This dual function highlights the Accords’ role as both a practical framework for coordinating mission partners and a broader diplomatic tool for building global alignment around U.S.-led norms.
Current Artemis Accords Signatories (as of 2025)
Angola, Argentina, Armenia, Australia, Austria, Bahrain, Bangladesh, Belgium, Brazil, Bulgaria, Canada, Chile, Colombia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, Estonia, Finland, France, Germany, Greece, Iceland, India, Israel, Italy, Japan, Liechtenstein, Lithuania, Luxembourg, Mexico, Netherlands, New Zealand, Nigeria, Norway, Panama, Peru, Poland, Republic of Korea, Romania, Rwanda, Saudi Arabia, Senegal, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, Thailand, Ukraine, United Arab Emirates, United Kingdom, United States, Uruguay
Geopolitical Divisions and Criticism
Despite their growing signatories, the Artemis Accords have not achieved universal acceptance. The world’s other two leading space powers, Russia and China, have refused to sign and emerged as the Accords’ most vocal critics, creating a clear geopolitical divide in plans for humanity’s lunar return.
Russian Opposition: “Space Colonialism” Claims
Russia has been scathing in its criticism. Dmitry Rogozin, former head of Russia’s space agency Roscosmos, dismissed the Artemis program as a “political project” and likened the Accords to NATO, where “America is in charge and everyone else must help and pay.” Other Russian officials have characterized the U.S. stance on resource extraction as “seizing territories” and compared it to the invasion of Iraq.
From Moscow’s perspective, the Accords are a U.S.-centric effort to bypass the United Nations, the proper multilateral forum for developing international space law. This harsh rhetoric is fueled not only by legal disagreements but also by Russia’s changing geopolitical status. Having been a premier U.S. partner on the International Space Station, Russia now finds itself in a diminished role, compounded by deteriorating Western relations over issues like the Ukraine conflict.
Chinese Alternative: The International Lunar Research Station
In response to the U.S.-led effort, China and Russia are building a rival coalition centered on their own ambitious lunar exploration plan: the International Lunar Research Station (ILRS). The ILRS is envisioned as a robotic and eventually human-crewed base at the Moon’s south pole, and like Artemis, it’s being presented as an open project for international partners.
China is actively recruiting nations to the ILRS, often using incentives such as low-interest loans for ground stations and technology transfer guarantees. This has resulted in two distinct and largely non-overlapping blocs, illustrating a clear geopolitical schism in lunar exploration plans.
Broader Expert Concerns
Criticism extends beyond Moscow and Beijing. Many space law experts and even some U.S. allies have raised concerns about the process by which the Accords were created. They were drafted primarily by the U.S. and then presented to potential partners, rather than being co-developed in a multilateral forum like the UN. This has led to worries that the U.S. is undermining the UN Committee on the Peaceful Uses of Outer Space role and could lead to space law “fracturing,” with different blocs operating under different rules.
Another critique is that the Accords focus heavily on states’ rights and responsibilities but may not adequately address increasingly powerful private companies’ actions. This could create a scenario where “rogue private entities could violate the agreement terms without facing severe consequences.”
Two Competing Visions
The emerging geopolitical competition is about more than planting flags. It’s a battle to shape the rules and norms that will govern space exploration’s future and the emerging cislunar economy. The nation or coalition whose framework becomes the dominant international standard will write the rulebook for this new economic and strategic frontier.
Artemis Coalition (U.S.-Led): 56 nations committed to market-friendly space resource utilization, safety zones for operations, and integration of commercial capabilities with government programs.
ILRS Coalition (China-Russia Led): A smaller but growing group of nations, often from the Global South, attracted to China’s state-led approach and technology transfer offers.
This bifurcation represents a fundamental shift from the universalist model of international space cooperation exemplified by the International Space Station to a more competitive, bloc-based approach reflecting terrestrial geopolitical alignments.
What This Means for Space’s Future
The Artemis Accords represent more than diplomatic paperwork—they’re an attempt to write the constitution for humanity’s expansion into space. The principles they establish regarding resource rights, operational zones, and commercial participation will likely influence space activities for decades to come.
The success of the U.S. approach depends on whether the growing coalition of signatories can translate political commitment into practical cooperation on actual missions. The true test will come when nations and companies begin implementing these principles in real lunar operations, particularly as competition for the most valuable lunar real estate—the water-ice-rich polar regions—intensifies.
Whether the Artemis Accords become the foundation for a new era of space cooperation or simply one of two competing frameworks remains to be seen. What’s certain is that they represent a decisive moment in space law development, marking the transition from the era of government-dominated space exploration to one where commercial interests and geopolitical competition play increasingly central roles.
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