Ancient Astronomers

  • 240 BCE

    Eratosthenes

    Eratosthenes
    Eratosthenes had created the discovery by designing a system to help find prime number. We still use the same method today.
  • 127

    Claudis Ptolemy

    Claudis Ptolemy
    Claudis Ptolemy had created the discovery of creating a world map that contained both longitude and latitude lines.
  • 1508

    Nicolaus Copernicus

    Nicolaus Copernicus
    Nicolaus Copernicus had created the discovery of creating the theory that the Earth and the other planets in the solar system revolve around the Sun.
  • 1572

    Tycho Brahe

    Tycho Brahe
    Tycho Brahe had created discovery of a bright star in the sky that was brighter than Venus, the star was also a bit farther than the moon. Tycho's discovery had also help Johannes and his discovery.
  • Johannes Kepler

    Johannes Kepler
    Johannes Kepler had created the discovery that the orbit of mars is an ellipse. Johannes' discovery has helped create the Kepler's two laws of planetary motion.
  • Sir Isaac Newton

    Sir Isaac Newton
    Isaac Newton had created the discovery of gravity. Gravity has helped modern physics today and has created the three laws of motion.
  • Albert Einstein

    Albert Einstein
    Albert Einstein had created the discovery of the equation E= mc^2. The equation means that both mass and energy are the exact same but in different forms.