John Glenn, the first American to orbit the Earth - a freckle-faced son of Ohio who was hailed as a national hero and a symbol of the space age, has died at 95. In 1959, the "Mercury Seven" group of military test pilots selected to be the first astronauts. Then in 1962, he flew the 'Friendship 7' mission and became the first American to orbit the Earth. Glenn was the last surviving member of the original Mercury crew. He would later have a long political career in the United States Senate, and made history again in 1998, flying aboard the shuttle Discovery and becoming the oldest person in space at age 77. We remember Senator Glenn not just for his service, but as an inspiration to all fields of space science over the years.