On this day, April 12, in 1961, Soviet cosmonaut Yuri Gagarin became the first man in space.
December 21, 2018, marked 50 years since Apollo 8 launched into space. During this mission, William Anders took the spectacular photograph that came to be known as “Earthrise”.
John Glenn returned to space on October 29, 1998, as a payload specialist on Space Shuttle Discovery, nearly four decades after he became the first American to orbit the Earth.
On this day, July 20, in 1969, Apollo 11 landed on the moon.