Earth living planet report 1552012

Earth Science Timeline

By Joel9
  • 8000 BCE

    8000 B.C.

    8000 B.C.
    farming communities start as people use the plow for farming.
  • 400 BCE

    4th century B.C.

    4th century B.C.
    Aristotle describes the motions of the planets
  • 200 BCE

    200 B.C.

    200 B.C.
    Eratosthenes calculates the size of earth. His result is very close to the earth's actual size.
  • 87 BCE

    87 B.C.

    87 B.C.
    Chinese report observing an object in the sky that later became known as Halley's comet
  • 132

    132

    132
    The Chinese make the first seismograph, a device that measures the strength of earthquakes.
  • 140

    140

    140
    Claudais Ptolemy draws a complete picture of an earth-centered universe.
  • 1265

    1265

    1265
    Nasir al-Din al-Tusi gets his own observatory. His ideas about how the planets move will influence Nikolaus Copernicus
  • 1543

    1543

    1543
    Nikolaus Copernicus publishes his book on the Revolutions of the Celestial Orbs. It says that the sun remains still and the earth moves in a circle around it.

  • 1609-1619

    1609-1619
    Johannes Kepler introduces the three laws of the planetary motion

  • 1610

    1610
    Galileo uses a telescope to see the rings around the planet Saturn and the moons of Jupiter.

  • 1650

    1650
    Maria Cunitz publishes a new set of tables to help astronomers find the position of the planets and stars

  • 1669

    1669
    Nicolaus Steno sets forth the basic principles of how to date rock layers.

  • 1687

    1687
    Isaac Newton introduces the concept of gravity

  • 1693-1698

    1693-1698
    Maria Eimmart draws 250 pictures depicting the phases of the moon. She also draws flowers and insects.

  • 1781

    1781
    Caroline and William (sister and brother) discover the planet Uranus.

  • 1803

    1803
    Luke Howard assigns to clouds the basic name that we still use today-cumulus, stratus, and cirrus.

  • 1830

    1830
    Charles Lyell writes principles of geology. This is the first modern geology textbook.

  • 1866

    1866
    Ernst Haeckel proposes the term "ecology" for the study of the environment.

  • 1907

    1907
    Bertram Boltwood introduces the idea of "radioactive" dating. This allows geologists to accurately measure the age of a fossil

  • 1908

    1908
    Alfred Wegener proposes the theory of continental drift. This theory says that all land on the earth was once a single mass. It eventually broke apart and the continents slowly drifted away from each other.

  • 1933

    1933
    Meteorologist Tor Bergron explains how raindrops form in clouds.

  • 1946

    1946
    Vincent Schaefer and Irving Langmuir use dry ice to produce the first artificail rain.

  • 1957

    1957
    The first human-made object goes into orbit when the Soviet Union launches Sputnik1.

  • 1962

    1962
    John Glenn is the first person to orbit the earth.

  • 1967

    1967
    Geophysicists Dan McKenzie and R.L Parker introduces the theory of plate tectonics.

  • 1967

    1967
    National Academy of Science reports on the dangers of chlorofluorocarbons (CFC) for the earth's ozone layer.

  • 1972

    1972
    Cygnuns X-l is is first identified as a blackhole.

  • 1979

    1979
    A near meltdown occurs at the Three Mile Island nuclear power plant in Pennsylvania. This alerts the nation to the dangers of nuclear power.

  • 1995

    1995
    The first "extra-solar" planet is discovered

  • 1995

    1995
    The National Serve Storms Laboratory develops NEXRAD, the national network of Doppler weather radar stations for early severe storm warnings.