The Artemis Accords have grown from eight founding participants in 2020 to 76 signatories. That is a diplomatic milestone, but the more useful question is what kind of rules this coalition is trying to normalize before sustained lunar activity becomes routine.
NASA announced in late September 2026 that Albania, Croatia, Côte d’Ivoire and San Marino had joined the Artemis Accords, bringing participation to 76 countries. San Marino became the 76th signatory on September 25.
The number matters because the accords are an attempt to translate broad principles of existing space law into practical expectations for civil exploration. They were created in 2020 by the United States and seven initial partners and explicitly reference the 1967 Outer Space Treaty and related agreements.
What the accords are trying to operationalize
The principles include peaceful purposes, transparency, emergency assistance, release of scientific data, interoperability, preservation of heritage, deconfliction of activities and mitigation of orbital debris.
One of the most consequential ideas is the treatment of harmful interference. NASA describes temporary “safety zones” as a way for actors to share the location and general nature of activities and coordinate so that one mission does not interfere with another. The concept is framed as consistent with free access and due regard under the Outer Space Treaty.
That may sound procedural, but lunar activity makes these details increasingly concrete. Multiple missions may want to operate near the same scientifically or operationally valuable locations. Coordination rules therefore affect how exploration works on the ground, not just diplomatic language.
Seventy-six countries is broad participation, not universal consensus
The expansion demonstrates that a large and geographically diverse group of governments is willing to endorse the framework. It does not mean every major space actor has accepted the same approach, nor does the headline number resolve long-running debates over issues such as resource use, safety zones or future lunar governance.
That distinction is important. The accords should not be read as a finished global constitution for space. They are better understood as a coalition-based effort to establish working norms around activities that are becoming less hypothetical.
The next test is implementation
NASA says signatories are now using meetings and working groups to discuss practical topics such as data sharing, mission coordination and debris mitigation. As participation grows, the value of the accords will depend less on how many flags appear on the list and more on whether participating states actually converge on predictable behavior.
That is the larger signal in the 76-country milestone. Space governance is moving from high-level treaty principles toward operational questions: who tells whom about an activity, how interference is avoided, how scientific data is shared and how a crowded lunar environment remains usable.
The accords are one answer to those questions. Their expansion makes that answer more influential, but not universal.