Histories Greatest Astronomers

By ozfas28
  • 240 BCE


    Born: 276 B.C
    Died: 195 B.C.
    Accomplishments: Measured the circumference of the Earth.
    Date of Discovery: 240 B.C.
    Importance: He proved the Earth was round and measured its size to a very close approximation.
  • 150

    Claudius Ptolemy

    Claudius Ptolemy
    Born: 90 A.D.
    Died: 168 A.D.
    Accomplishments: Created the Ptolemaic model for the Solar System
    Date of Discovery: 150 A.D.
    Importance: Falsely depicted where the Solar System’s bodies were in relation to Earth, It was used for almost 1500 years by Astronomers
  • 1543

    Nicolaus Copernicus

    Nicolaus Copernicus
    Born: 1473 A.D.
    Died: 1543 A.D.
    Accomplishments: Proposed and advocated the Heliocentric model for the solar system
    Date of Discovery: 1543 A.D.
    Importance: Changed the way the Solar system and its bodies are viewed and studied
  • 1572

    Tycho Brahe

    Tycho Brahe
    Born: 1546 A.D.
    Died: 1601 A.D.
    Accomplishments: Made detailed observations of the heavenly bodies in the sky
    Date of Discovery: 1572 A.D. -- 1601 A.D.
    Importance: His observation would be used by other scientists in creating many new and revolutionary observations and ideas
  • Johannes Kepler

    Johannes Kepler
    Born: 1571 A.D.
    Died: 1630 A.D.
    Accomplishments: Created Kepler’s three laws of planetary motion
    Date of Discovery: 1609 A.D. -- 1618 A.D.
    Importance: Accurately described planetary motions and relations
  • Issac Newton

    Issac Newton
    Born: 1643 A.D.
    Died: 1727 A.D.
    Accomplishments: Devised the Universal law of Gravitation and also the Three Laws of Motion
    Date of Discovery: 1687 A.D.
    Importance: Accurately described Gravity between the Heavenly bodies in the Solar System
  • Albert Einstein

    Albert Einstein
    Born: 1879
    Died: 1955
    Accomplishments: Devised relativity, proposed space-time, and its distortion by gravity devised energy and matter relationship (e=mc^2), etc.
    Date of Discoveries: 1905 -- 1955
    Importance: Depicted how fundamental principles work and how space and time behave with matter