Ancient Astronomers Timeline

Timeline created by annabellecleary
  • -276 BCE

    Eratosthenes

    He used the sun to measure around the Earth. He proved that the Earth wasn't flat.
  • 90

    Claudius Ptolemy

    He created a model of the solar system with everything revolving around the Earth. Many scientists followed and believed it for many years.
  • 1473

    Nicolaus Copernicus

    He proposed a model of the solar system with the Earth's revolution around the sun. It changed the way scientists viewed the solar system.
  • 1546

    Tycho Brahe

    Built many instruments and used clocks and timekeepers in order find a way to see the stars. This is important because they were the first tools used to see space before the telescope.
  • Johannes Kepler

    He tried to prove that there were 6 planets with a spherical orbit. This changed how scientists began to imagine the universe.
  • Sir Isaac Newton

    He calculated three laws describing the motion of objects (Newton's Laws). He changed the way scientists viewed gravity.
  • Albert Einstein

    He suggested the laws of physics are the same across the universe, the speed of light is constant in a vacuum, and space and time are linked and distorted by gravity. This changed the way the universe was viewed.