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Sputnik l
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Dog Laika
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Explorer 1
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President Eisenhower signed the National Aeronautics and Space Act of 1958 into law on July 29, creating NASA.
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Ham flew a suborbital flight on the Mercury-Redstone 2 mission, part of the U.S. space program's Project Mercury.
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Yuri Gagarin
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Alan Shepard
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Kennedy stood before Congress on May 25, 1961, and proposed that the US "should commit itself to achieving the goal, before this decade is out, of landing a man on the Moon and returning him safely to the Earth.
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John H. Glenn
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Gemini III: 23 March 1965, first crewed flight. Gemini IV: 3-7 June 1965, first EVA. Gemini V: 21-29 August 1965, first week-long flight, first fuel cells.
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Alexei Leonov
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Edward H. White
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Gemini 9- Astronauts Elliot See and Charles Bassett were scheduled to fly the mission,but they tragically died in a plane crash while training for the mission.
Apollo 1- Astronauts Gus Grissom, Ed White, and Roger Chaffee were preparing for the first manned Apollo mission when a fire broke out inside the spacecraft during a launch rehearsal. -
Apollo 7- The first Apollo mission to carry a crew into space.
Apollo 8- The first mission to take humans to the Moon and back.
Apollo 9- The first crewed flight of all Apollo lunar hardware.
Apollo 10- A complete staging of the Apollo 11 mission without actually landing on the Moon.
Apollo 11- Humans walked on the Moon for the first time.