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Discoveries and Events 19th - 21st Century

  • 1805 - John Dalton

    1805 - John Dalton

    Atomic Theory
  • Period: to

    The Times

  • 1838 - Matthias Schleiden

    1838 - Matthias Schleiden

    Discovered that all plants are made of cells
  • 1846 - William Morton

    1846 - William Morton

    Discovery of Anesthesia
  • 1869 - Dmitri Mendeleev

    1869 - Dmitri Mendeleev

    Periodic Table
  • 1898 - J.J Thomson

    1898 - J.J Thomson

    Proposed the Plum Pudding model of the atom
  • 1913 - Henry Moseley

    1913 - Henry Moseley

    Defined the atomic number
  • 1924 - Edwin Hubble

    1924 - Edwin Hubble

    Discovered that the milky way is one of many galaxies.
  • 1927 - Georges Lemaitre

    1927 - Georges Lemaitre

    Theory of The Big Bang.
  • 1932 - James Chadwick

    1932 - James Chadwick

    Discovery of the Neutron.
  • 1965 - Leonard Hayflick

    1965 - Leonard Hayflick

    Normal cells divide only a certain number of times: the Hayflick limit.
  • 1997 - Roslin Institute

    1997 - Roslin Institute

    Dolly the Sheep was cloned.
  • 2001

    2001

    The first draft of the human genome is Completed
  • 2006 - Shinya Yamanaka

    2006 - Shinya Yamanaka

    Generates the first induced pluripotent stem cells.
  • 2012

    2012

    Photonic Molecules are discovered at MIT