Ancient Astronomers

By melshlagel
  • 230 BCE

    Eratosthenes

    Born in- 276 B.C. Died in 194B.C.
    Known for Sieve of Eratosthenes, occurred around 230 B.C.
    important because its an ancient algorithm to find all prime numbers.
  • 127

    Claudius Ptolemy

    born 100A.D. and died in 168 A.D.
    discovered Geocentric theory year it occurred was around 127 A.D.
    its important because he believed that the earth was the center of the universe so that helped researchers expand research and see what lies beyond our galaxy.
  • 1473

    Nicolaus Copernicus

    born February 19,1473 and died in May 24,1543
    discovered Copernican principle occurred in 1543.
    Important because proves why Earth moves.
  • 1571

    Johannes Kepler

    Born in December 27,1571 and died November 15,1630.
    Discovered Keplers Law of Planetary Motion and occurred in 1609.
    Explains how the planets move around the sun and how they are positioned.
  • 1572

    Tycho Brahe

    Born in December 14th, 1546 and died in October 24th,1601
    discovered SN 1572 occured in November 11,1572.
    important because its as bright as Venus and could only be seen during daylight

  • Sir Issac Newton

    Born January 4,1643 and died March 31,1772
    Discovered universal gravity and occurred in 1687.
    Important because explains how the planets are formed and spaced also research led to mathematic advancements in Calculus.

  • Albert Einstein

    Born March 14,1879 and died in April 18,1955
    Discovered theory of relativity which occurred in 1905
    Important because it explains law of physics are the same and light travels the same thru the galaxy