John Glenn was not popular with the other astronauts. Glenn was the backup pilot for Shepard and Grissom on the first two manned Project Mercury flights, the sub-orbital missions Mercury-Redstone 3 and Mercury-Redstone 4. Glenn was selected for Mercury-Atlas 6, NASA's first manned orbital flight, with Carpenter as his backup. Putting a man in orbit would achieve one of Project Mercury's most important goals. Shepard and Grissom had named their spacecraft "Freedom 7" and "Liberty Bell 7". The numeral 7 had originally been the production number of Shepard's spacecraft, but had come to represent the Mercury 7. Glenn named his spacecraft, number
John Glenn research reason. It's got nothing to do with medicine". In a 2012 interview, Glenn said he regretted that NASA did not continue its research on aging by sending additional elderly people into space. After STS-95 returned safely, its crew received a ticker-tape parade. On October 15, 1998, NASA Road 1 (the main route to the Johnson Space Center) was temporarily renamed John Glenn Parkway for several months. Glenn was awarded the NASA Space Flight Medal in 1998 for flying on STS-95. In 2001, Glenn opposed sending Dennis Tito, the world's first space tourist, to the International Space Station because Tito's