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Sputnik 1
The Soviet satellite "Soviet 1" is the first object sent into space and to successfully orbit the Earth -
Laika- the space dog
The first "Earthling", a Soviet dog named Laika, is successfully sent into space. -
1st U.S. Satellite
The first United States satellite to orbit the Earth - "Explorer 1" - is launched. -
Formation of NASA
NASA (National Aeronautics and Space Administration) is formed. -
Yuri Gagarin
Soviet cosmonaut Yuri Gagarin becomes the first person in space- orbits the Earth. -
Alan Shepard
Alan Shepard becomes the first United States citizen in space. -
John Glenn
John Glenn becomes the first United States citizen to orbit the Earth. -
Moon Walk
Apollo 11 crew member Neil Armstrong is the first man to walk on the moon. His fellow crew member Edwin "Buzz" Aldrin is right behind him, making him the second man to walk on the moon. -
Voyager II
Voyager II, the first space probe to fly by the four gas giant planets- Jupiter, Saturn, Uranus and Neptune- is launched. -
1st Shuttle Launch
The first American space shuttle is launched. This is the first "re-usable" space craft in history. -
Challenger Tragedy
The space shuttle Challenger explodes shortly after take-off, killing all of its crew members including the first teacher in space, Christa McAuliffe. -
Hubble Launch
The Hubble Telescope is launched into orbit around the Earth. -
Mars Landing
The un-manned American space probe "Pathfinder" lands on Mars and begins its successful exploration of the planet. -
Living in Space
Human habitation in the International Space Station begins. -
Columbia Tragedy
The space shuttle Columbia explodes upon re-entry into Earth's atmosphere.
