Space exploration timeline

By Cricket_42

  • In Italy, Galileo uses telescope for astronomical purposes. He discovers 4 Jovian moons, the Moon's craters and the Milky Way galaxy.

  • In Germany, Kepler's First and Second Laws of Planetary Motions are announced.

  • Period: to

    1609-1956

  • Discovery of the 'Doppler Effect' by Austrian physicist and mathematician, Christian Doppler.

    Discovery of the 'Doppler Effect' by Austrian physicist and mathematician, Christian Doppler.

  • Hubble shows that galaxies exist outside the Milky Way galaxy.

  • Clyde Tombaugh discovers Pluto.

    Clyde Tombaugh discovers Pluto.

  • Sputnik, first object to orbit the Earth, launched by the Russians.

    Sputnik, first object to orbit the Earth, launched by the Russians.

  • Period: to

    1957-1980

  • Explorer 1 launched. This was the first U.S. satellite to orbit the Earth.

    Explorer 1 launched. This was the first U.S. satellite to orbit the Earth.

  • Armstrong and Aldrin walk on the Moon as part of Apollo 11 mission.

    Armstrong and Aldrin walk on the Moon as part of Apollo 11 mission.

  • The Russian Venera 7 becomes first to land softly on the surface of Venus

  • The U.S. Viking probes land on Mars.

  • Period: to

    1981-2015

  • Galileo space probe reaches Jupiter.

  • Construction begins on the International Space Station.

  • The Lunar Prospector reaches the Moon.

    The Lunar Prospector reaches the Moon.

  • New evidence found for water on Mars.

  • Space Shuttle Endeavor makes a detailed, global map of Earth