D113-115 Earth Science Timeline: Astronomers

By AToimeTioastUser
  • Greek astronomer Aristarchus suggested that Earth rotates around the Sun
    280 BCE

    Greek astronomer Aristarchus suggested that Earth rotates around the Sun

  • Greek astronomer Eratosthenes accurately measured Earth's circumference.
    240 BCE

    Greek astronomer Eratosthenes accurately measured Earth's circumference.

    Bald ugly dude.
  • Greek astronomer Hipparchus developed the first accurate star map
    130 BCE

    Greek astronomer Hipparchus developed the first accurate star map

  • Period: Feb 19, 1473 to May 24, 1543

    Copernicus Lifespan

  • Copernicus, a Polish astronomer, developed the Heliocentric Theory.
    1543

    Copernicus, a Polish astronomer, developed the Heliocentric Theory.

    Ugly dude.
  • Period: Feb 15, 1564 to

    Galileo Galilei Lifespan

  • Period: Dec 27, 1571 to

    Johannes Kepler Lifespan

  • Dutch man Hans Lippershey invented the Telescope.

    Dutch man Hans Lippershey invented the Telescope.

  • Italian astronomer Galileo Galilei used the Telescope to discover Jupiter's moons and more.

    Italian astronomer Galileo Galilei used the Telescope to discover Jupiter's moons and more.

  • German astronomer Johannes Kepler developed his First and Second laws of motion

    German astronomer Johannes Kepler developed his First and Second laws of motion

  • Johannes Kepler developed his Third law of motion.

  • Danish astronomer Ole Romer measured the Speed of Light

    Danish astronomer Ole Romer measured the Speed of Light

    Ugly dude.
  • William Herschel, a German-British Astronomer, discovered Uranus.

    William Herschel, a German-British Astronomer, discovered Uranus.

  • Piazzi, Italian astronomer and priest, observed the first known asteroid, named Ceres.

  • German Astronomer Johann Galle discovered Neptune using a telescope and math

    German Astronomer Johann Galle discovered Neptune using a telescope and math

  • German physicist Albert Einstein introduces the Theory of Relativity

    German physicist Albert Einstein introduces the Theory of Relativity

  • American Astronomer Edwin Hubble First Observed a Galaxy Outside of the Milky Way

    American Astronomer Edwin Hubble First Observed a Galaxy Outside of the Milky Way

  • Cosmic Microwave Background Radiation is discovered by Penzias and Wilson

    Cosmic Microwave Background Radiation is discovered by Penzias and Wilson

  • USA wins the Space Race by putting the first man on the moon

    Debatable.
  • Saul Perlmutter Discovers that the Universe is expanding at a constantly increasing rate.

    Saul Perlmutter Discovers that the Universe is expanding at a constantly increasing rate.

  • Scientists finally discovered the real Hubble Constant.

  • The First Black Hole is photographed by the Event Horizon Telescope.