The document outlines key events in early space exploration, including the Soviet Union launching the first artificial satellite and human (Yuri Gagarin) in space in 1957 and 1961. Less than a month later, American Alan Shepard became the second person in space. Valentina Tereshkova then became the first woman in space for the Soviet Union in 1963, and Neil Armstrong was the first person to walk on the moon as part of the Apollo 11 mission in 1969, although he misspoke his famous line.