Randolph Bresnik

Randolph "Randy" James Bresnik is an American retired officer in the United States Marine Corps and an active NASA astronaut. A Marine aviator by trade, Bresnik was selected as a member of NASA Astronaut Group 19 in May 2004. He first launched to space on STS-129, then served as flight engineer for Expedition 52, and as ISS commander for Expedition 53. In June 2026, he was announced as the commander of Artemis III as part of NASA's Artemis program.