science timeline

By Caro Alvarez
  • Sep 15, 1543

    Copernicus

    Copernicus
    Published his heliocentric model. The Sun, the moon and the 5 known planets revolved around the Sun.

  • GALILEO

    GALILEO
    He used a telescope for the first time to observe the sky. This was the birth of modern astronomy

  • Isaac Newton

    Isaac Newton
    He built the first telescope using mirrors instead of lenses

  • Newton

    Newton
    He published his book The Principles of Natural Philosophy in which he explained the laws govering the movement of planets

  • Edmund Halley

    Edmund Halley
    He explained Newton´s laws and predicted the return of the comet in 1758

  • W. Herschel

    W. Herschel
    He discovered the planet Uranus

  • F. W. Bessel

    F. W. Bessel
    He meassured the distance from a star for the firt time using geometric methods. This proved that Earth follows an orbit around the Sun as Copernicus suggested.

  • E.P. Hubble

    E.P. Hubble
    He proved that some of the nevulas seen in the sky are in fact independent galaxies. He discovered that the galaxies move away from each other.

  • C. Tombaugh

    C. Tombaugh
    He discovered Pluto

  • THE MOST RESENT DISCOVERY

    THE MOST RESENT DISCOVERY
    The discovery of the first extra-solar planets