Which booster was used to send the 1st American into orbit?
John Glenn John Herschel Glenn Jr. (July 18, 1921 – December 8, 2016) was a United States Marine Corps aviator, engineer, astronaut, and United States Senator from Ohio. In 1962 he became the first American to orbit the Earth, circling it three times.
TDRS-1 TDRS-1, known before launch as TDRS-A, was an American communications satellite which was operated by NASA as part of the Tracking and Data Relay Satellite System. It was constructed by TRW and launched by "Challenger" on its maiden flight, STS-6.