The impact of the Thursday death of John Glenn, the last of the first set of astronauts, is being felt throughout the space community, including the Colorado Springs-based Space Foundation. "U.S. success in space was built on the courage and determination of men like John Glenn, who dedicated his life to serving his country and proving what humans could accomplish in space," Kevin Cook, Space Foundation spokesman, said in a statement. Glenn, 95, was the last of the Mercury Seven astronauts and a former U.S.