John Glenn of the Mercury Seven. Glenn resigned from NASA in January 1964. He planned to run for a U.S. Senate seat from Ohio, but an injury in February 1964 forced his withdrawal. He retired from the Marine Corps the following year. He lost a close primary election in 1970. A member of the Democratic Party, Glenn first won election to the Senate in 1974 and served for 24 years until January 1999. In 1998, while still a sitting Senator, Glenn flew on the "Discovery" space shuttle's STS-95 mission, and became the oldest person to fly in space and the only person
John Glenn offer, and that Zwicharowski's actions were improper. No administrative action was taken as he had retired. President Barack Obama said that John Glenn, "the first American to orbit the Earth, reminded us that with courage and a spirit of discovery there's no limit to the heights we can reach together". Tributes were also paid by President-elect Donald Trump, and former Secretary of State Hillary Clinton. The phrase "Godspeed, John Glenn", which fellow Mercury astronaut Scott Carpenter used to hail Glenn's launch into space, became his social-media hashtag: #GodspeedJohnGlenn. Former and current astronauts added tributes; so did NASA Administrator and former