Pioneering Astronaut Bob Behnken Retires from NASA By Overlook Horizon|2022-11-10T15:17:00-05:00November 10th, 2022|Categories: NASA News|Tags: Artemis, breaking news, nasa, outer space, space, spaceflight| NASA astronaut and former U.S. Air Force Col. Bob Behnken is retiring from NASA after 22 years of service. His last day with the agency is Friday, Nov. 11.