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Sputnik 1
The first satellite Sputnik 1 is the first object sent into space and to successfully orbit the Earth -
Explorer 1
The First US Satellite (Explorer 1) to Orbit the Earth is Launched -
NASA
NASA is Formed -
The first man in space
Yuri Gagrarin orbits the Earth as the first man in space -
The First American to go into space
Alan Shepard is the First American to go into space -
John Glenn orbits the Earth
John Glenn is the first United States citizen to orbit the Earth -
The first man to walk on the moon
Apollo 11 crew member Neil Armstrong is the first man to walk on the moon. His fellow Apollo astronaut crew member Edwin "Buzz" Aldrin is right behind him, becoming the second man to walk on the moon -
First American Space Shuttle
First American Space Shuttle is Launched. This marks the use of the first "re-usable" space craft -
The Space Shuttle Challenger
The Space Shuttle Challenger Explores Shortly After Take-Off -
International Space Station
Human habitation in the International Space Station begins.