M. Scott Carpenter ,

Malcolm Scott Carpenter was an American naval officer, aviator, test pilot, aeronautical engineer, astronaut, and aquanaut, selected as one of NASA's original Mercury Seven astronauts in 1959. He became the second American to orbit Earth aboard Aurora 7 in 1962 and later participated in the Navy's SEALAB II project as an aquanaut, living on the ocean floor for 30 days in 1965. After retiring from the Navy in 1969, he founded Sea Sciences, Inc., to develop ocean resource programs and collaborated with Jacques Cousteau.