John Glenn was an astronaut for NASA.
John Glenn . He received the NASA Distinguished Service Medal , the Congressional Space Medal of Honor in 1978 , was inducted into the U.S. Astronaut Hall of Fame in 1990 , and was the last surviving member of the Mercury Seven . The United States Astronaut Hall of Fame , located just south of Titusville , Florida , honored American astronauts and featured the world 's largest collection of their personal memorabilia , focusing on those astronauts who have been inducted into the Hall ; as well as Sigma 7 , the fifth manned Mercury spacecraft .