History of Astronomy

By wjort834
  • 384 BCE

    Aristotle

    Aristotle
    He studied under the great philosopher Plato and later started his own school known as the Lyceum at Athens.
  • 100

    Ptolemy

    Ptolemy
    Considered the Earth to be the center of the universe.
  • 1473

    Copernicus

    Copernicus
    Copernicus said that the planets revolved around the sun, and made a model of his idea of the solar system.
  • 1546

    Tycho Brahe

    Tycho Brahe
    Tycho Brahe was an astronomer who made a model that helped the belief of a heliocentric universe.
  • 1564

    Galileo

    Galileo
    Galileo was known for his improvements on the telescope. He also investigated the laws of motion.
  • 1570

    Hans Lippershey

    Hans Lippershey
    Hans Lippershey was a Dutch eyeglass maker who many historians believe was the inventor of the first telescope and is also sometimes credited with the invention of the microscope.
  • 1571

    Johannes Kepler

    Johannes Kepler
    Johannes kepler is a widely known figure in the 17th-century scientific revolution. He is famous for his laws of planetary motion. Stated that planets revolve in an oval-like shape known as an elliptical pattern.

  • Giovanni Cassini

    Giovanni Cassini
    Giovanni Domenico Cassini noted the division of rings on saturn.

  • Sir Isaac Newton

    Sir Isaac Newton
    He developed the three laws of motion.

  • William Herschel

    William Herschel
    Known for finding the planet Uranus.

  • Percival Lowell

    Percival Lowell
    Best known for stating the possibility of life on Mars.

  • Ejnar Hertzprung

    Ejnar Hertzprung
    Along with Henry Norris Russell, he developed the Hertzsprung–Russell diagram.

  • Albert Einstein

    Albert Einstein
    Developed the Theory of Relativity and made impacts on science and philosophy today.

  • Edwin Hubble

    Edwin Hubble
    Edwin Powell Hubble played an important role in establishing the fields of extragalactic astronomy and observational cosmology.

  • Karl Jansky

    Karl Jansky
    he was the first to discover radio waves emanating from the Milky Way.

  • Sputnik

    Sputnik
    Sputnik 1 was the first artificial Earth satellite. The Soviet Union launched it into an elliptical low Earth orbit on the 4th of October in 1957.

  • John Glenn

    John Glenn
    He was the first American to orbit the Earth, circling it three times in 1962.

  • The Apollo Program

    The Apollo Program
    first space program that succeeded in landing the first humans on the Moon from 1969 to 1972.

  • Yuri Gagarin

    Yuri Gagarin
    First human to journey into outer space.

  • Neil Armstrong

    Neil Armstrong
    First person to walk on the moon. Known for the quote, "One small step for man, one giant leap for mankind."

  • First Space shuttle Flight

    First Space shuttle Flight
    Launched on April 12th, 1981.

  • Mars Pathfinder Expedition

    Mars Pathfinder Expedition
    Mars Pathfinder is an American robotic spacecraft that landed a station with a roving probe on Mars.

  • Cassini Orbiter

    Cassini Orbiter
    collaboration between NASA, the European Space Agency, and the Italian Space Agency to send a probe to study the planet Saturn and its system, including its rings and natural satellites.

  • China Lands on Far side of Moon

    China Lands on Far side of Moon
    China Lands on far side of the moon in early december, and lands at 10:26 am.