Ancient Astronomers Timeline

By Abe B.
  • 220 BCE

    Eratosthenes

    Devised latitude and longitude and this is important because it's how we split the world up to understand certain things about it especially with weather and seasons.
  • 150 BCE

    Claudius Ptolemy

    He made Almagest which is the most detailed account of what ancient astronomy was like and how they figured things out during his time which gave us very important insight.
  • 1507

    Nicolaus Copernicus

    He proposed and got the theory that the sun was actually stationary at the center of the universe brought up which is a good thing because now we know for a fact that, even though its not at the middle of the universe, it is at the center of our body of planets leading to the first somewhat accurate diagram of planets for that time.
  • 1572

    Tycho Brahe

    Created instruments that created accurate readings of orbital paths of stars and planets like finding out that planets are in elliptical orbits.
  • Period: to

    Johannes Kepler

    Made laws to find out the motion of planets accurately and it is still used today being very important to understand how planets differ and why they differ on thing like full revolutions and he helped lead to the proving of the heliocentric theory, he also used Tycho Brahe's work to help him work on this, who was actually his mentor.
  • Period: to

    Sir Isaac Newton

    He is known as the most influential scientist and mathematician due to him being the one that created the three laws of motion and that gravity is a thing that can be looked at and solved in a lot of ways.
  • Period: to

    Albert Einstein

    He developed the theory of relativity which has led to helping studies of thing like electromagnetic fields and how light-speed would not change even if the observer was moving faster or even slower.

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