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Ancient to Modern Day Space Exploration

By Sb17182
  • Aristotle
    100

    Aristotle

    386-322bce, Aristotle created the GEOCENTRIC model.
  • Aristarchus
    200

    Aristarchus

    310-230bce, Aristarchus created the HELIOCENTRIC model.
  • Ptolemy
    300

    Ptolemy

    168bce, Ptolemy created a modifies GEOCENTRIC model of the universe.
  • Copernicus
    May 28, 1543

    Copernicus

    1543, Copernicus used the HELIOCENTRIC model.
  • Galileo
    May 28, 1564

    Galileo

    1564-1642, Galileo proved the HELIOCENTRIC model through parallax. He could observe parallax through his telescope. His telescope allowed him to veiw the outer planets.
  • Kepler

    Kepler

    Alive during the time of Galileo, Kepler modified the HELIOCENTRIC model to include eliptical orbits.
  • Sputnik I

    Sputnik I

    On October 4, 1957, the Soviet Union sucessfully launched it nto orbit. It became the first artificial satellite.
  • First Mission to the Moon

    First Mission to the Moon

    Neil Armstrong and Buzz Arnold were the first people to set foot on another celestial body. There have been 6 total US manned missions to the moon.
  • First Launch of a Spacecraft

    First Launch of a Spacecraft

    On April 12, 1981, the first spacecraft was launched into orbit using rockets. This was also the first orbital mission.
  • Mars Robotic Exploration

    Mars Robotic Exploration

    NASA's Mars Exploration Rover Mission (MER) is a robotic space mission involving Spirit and Opportunity, two rovers, exploring Mars.
  • Newton and Halley

    Newton and Halley

    Alive 1656-1742 Halley and 1642-1746 Newton, the pair tracked Halley's Comet, accurately predicting it's path, proving objects have elliptical orbits.