NASA Administrator Jim Bridenstine, left, meets back stage with former NASA astronaut Buzz Aldrin, prior to giving the keynote speech at the Humans to Mars Summit (H2M), Wednesday, May 9, 2018 at George Washington University in Washington. Bridenstine joined more than 20 NASA scientists and technologists at the three-day event sponsored by Explore Mars Inc. It brought industry, government and the scientific, entertainment and academic communities together to discuss technology developments, foster partnerships, and encourage students to pursue STEAM careers. Photo Credit: (NASA/Bill Ingalls)