Ireland officially joined the Artemis Accords on Monday, May 4, 2026, during a signing ceremony at NASA Headquarters in Washington, D.C. [1].

This agreement integrates Ireland into a growing international coalition dedicated to the peaceful exploration of the moon and other celestial bodies. By signing the accords, Ireland secures a formal role in NASA’s Artemis program, allowing the nation to participate in shared space-cooperation efforts and establish a framework for sustainable lunar activity.

Irish Ambassador to the United States Geraldine Byrne Nason and NASA Administrator Jared Isaacman presided over the event, which took place at 3 p.m. EDT [2]. The ceremony marked Ireland's entry as the 66th nation to sign the accords [3].

Ireland was not the only European country to join the treaty on Monday. Malta also signed the accords on the same day, bringing the total number of new European signatories for the date to two [4].

The Artemis Accords serve as a non-binding set of principles designed to guide civil space exploration. These principles emphasize transparency, interoperability, and the peaceful use of space for the benefit of all humanity. Through this partnership, Ireland can collaborate with other signatory nations on technical standards and scientific research as NASA works toward returning humans to the lunar surface.

Ambassador Byrne Nason represented the Irish government in the proceedings, finalizing the commitment to international space law and cooperation [1]. The event highlights a continuing trend of smaller nations seeking formal alignment with U.S.-led space initiatives to ensure their domestic space sectors remain competitive and integrated into global missions [3].

“Ireland is the 66th nation to sign the Artemis Accords”

Ireland's accession to the Artemis Accords signals a strategic move to elevate its presence in the global space economy. By aligning with the U.S. and 65 other nations, Ireland transitions from a passive observer of space exploration to an active participant in the regulatory and operational framework of lunar missions, potentially opening doors for Irish aerospace industry growth and scientific collaboration.