Solar system

History of space exploration

  • Sputnik 1

    Sputnik 1
    The Soviet satellite "Sputnik 1" is the first object sent into space and to successfully orbit Earth.
  • Exlorer 1 is launched

    Exlorer 1 is launched
    The first United States satellite to orbit the Earth.
  • NASA

    NASA (National Aeronautics and Space Administration) is formed.
  • Yuri Gagarin

    Yuri Gagarin
    Russian citizen, Yuri Gagarin, is the first human in space (he orbits the Earth).
  • Alan Shepard

    Alan Shepard
    Aland Shepard is the first United States citizen to go into space.
  • John Glenn

    John Glenn
    John Glenn is the first United States citizen to orbit the Earth
  • First man on the moon

    First man 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, decoming the second man to walk on the moon.
  • First American Space Shuttle

    First American Space Shuttle
    The first American space shuttle is launched. This marks the use of the first "re-usable" space craft.
  • Challenger Explosion

    Challenger Explosion
    The space shuttle Challenger explodes shortly after take-off.
  • International Space Station

    International Space Station
    Human habitation in the International Space Station begins.