Chief of Staff in the Office of the Under Secretary of State for Economic Affairs William Cappelletti, left, US Ambassador to Ireland Edward Walsh, Minister for Enterprise, Tourism and Employment Peter Burke T.D., NASA Administrator Jared Isaacman, and Ambassador of Ireland to the United States of America Geraldine Byrne Nason, right, pose for a group photograph after Ireland signed the Artemis Accords, Monday, May 4, 2026, at the Mary W. Jackson NASA Headquarters building in Washington. Ireland is the 66th country to sign the Artemis Accords, which establish a practical set of principles to guide space exploration cooperation among nations participating in NASA’s Artemis program. Photo Credit: (NASA/Bill Ingalls)