BHP Timeline

By g36328
  • 200,000 BCE

    Hominids Appear

    Hominids actually appeared around 6 million years ago. Time toast won't allow me to put a date that far back.
  • Period: 276 BCE to 194 BCE

    Eratosthenes

    -Found the circumference of the Earth with surprising accuracy
  • Period: 100 to 165

    Ptolemy

    -Proposed the idea of a geocentric unverse
  • Period: Feb 19, 1473 to Mar 24, 1543

    Copernicus

    -First proposed the Heliocentric view of the universe
  • Period: Dec 14, 1546 to

    Brahe

    -Helped to make the heliocentric view generally accepted
  • Period: Jan 22, 1561 to

    Bacon

    -Empiricism
    -Said that you shouldn't believe anything until you can test if for yourself
  • Period: Feb 15, 1564 to

    Galileo

    -Helped to prove the heliocentric view -Studied the phases of venus
  • Period: Dec 27, 1571 to

    Kepler

    -3 Laws of Planetary Motion
    -Planets move in ellipses
  • Period: to

    Descartes

    -I think therefore I am
  • Period: to

    Locke

    -Liberalism
  • Period: to

    Newton

    -Discovered gravity
    -Established the three laws of motion
  • Period: to

    Mendeleev

    -Created the periodic table of elements
  • Period: to

    Curie

    -Discovered elements polonium and radium
  • Period: to

    Leavitt

    -Figured out how to find the distance and brightness of a Cephid star
  • Period: to

    Wegener

    -Came up with the theory of continental drift
  • Period: to

    Hubble

    -Proved that galaxies exist beyond our own
    -He found that the universe is expanding
  • Period: to

    Hess

    -Used sonar to discover the phenomenon seafloor spreading