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Explorer 1 was the first satellite launched by the United States when it was sent into space on January 31, 1958.
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History changed on October 4, 1957, when the Soviet Union successfully launched Sputnik I.
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On September 14, 1959, it successfully impacted east of Mare Imbrium near the craters Aristides, Archimedes, and Autolycus.
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Yuri Alekseyevich Gagarin was a Russian Soviet pilot and cosmonaut. He was the first human to journey into outer space, when his Vostok spacecraft completed an orbit of the Earth on 12 April 1961.
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Alan Shepard became the first American in space. He flew on a Mercury spacecraft. There was just enough room for one person. He named his capsule Freedom 7.
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Mercury Friendship 7 lifts off with John H. Glenn, Jr., the first American in orbit, and orbits the Earth three times.
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On June 16, 1963, aboard Vostok 6, Soviet Cosmonaut Valentina Tereshkova becomes the first woman to travel into space.
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Apollo 11 was the first spaceflight that landed humans on the Moon. Americans Neil Armstrong and Buzz Aldrin landed on July 20, 1969
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The Venera 7 was a Soviet spacecraft, part of the Venera series of probes to Venus. When it landed on the Venusian surface, it became the first spacecraft to land on another planet and first to transmit data from there back to Earth.
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The Apollo–Soyuz Test Project, conducted in July 1975, was the first joint U.S.–Soviet space flight, as a symbol of the policy of detente that the two superpowers were pursuing at the time.
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Pioneer 7 was launched on 17 August 1966. It was last tracked successfully on 31 March 1995. The spacecraft and one of the science instruments were still functioning.