The story of America's first astronauts, known as the Mercury 7, told through archival news & radio reports, newly transferred & previously unheard NASA mission audio recordings, and more rare & unseen material.

John Glenn goes on another journey into outer space for tests on how old age is affected there. His whole life is chronicled in this informative documentary, from his first mission above to his experience as a senator and finally, his blast into space at age 77.