History of Cosmic Physics

By riad.c
  • Oct 6, 1500

    Nicolaus Copernicus

    Nicolaus Copernicus
    He presented a refined model of the Universe, based on his readons of the work of Aristarchus, in this model, Copernicus suggested that the sun was stationary in the centre of the Universe and all other celstial bodies rotated around the Sun. The heliocentric model was very much similar to Aristarchus’ model in its basic features. He proposed that the Sun was stationary in the centre of the Universe and the earth revolved around it. This is referred to as the heliocentric model.
  • Oct 6, 1546

    Tycho Brahe

    Tycho Brahe
    Made the most precise observations that had yet been made by devising the best instruments available before the invention of the telescope.
  • Feb 15, 1564

    Galileo Galilei

    Galileo Galilei
    In Venice on a holiday in 1609, Galileo Galilei heard rumours that a Dutch spectacle-maker had invented a device that made distant objects seem near at hand.
  • Dec 21, 1571

    Johanne Kepler

    Johanne Kepler achieved many feats in his life, one being the development of the Laws of Planetary Motion. The Laws of Planetary Motion state that:
    1) Planets must travel in an elliptical pattern orbiting the Sun, also known as an ellipses. The Sun is said to be the focus, not the perfect center.
    2) The speed of the planets differs in regards to the distance from the Sun. The closer a planet is represents a faster speed and the further the distance is, the slower it travels.
    3) The further a pla

  • Henrietta Leavitt

    Henrietta Leavitt
    Leavitt’s most notable achievement is observing a linear relationship between the luminosity and the pulsation period of star.

  • Edwin Hubble

    Edwin Hubble
    Hubble successfully showed that the Andromeda was really a separate galaxy (some nebulae are clouds of gas, however prior to Hubble, astronomers could not distinguish those that were really galaxies).

  • Claudius Ptolemy

    Claudius Ptolemy
    The Almagest is the only surviving comprehensive ancient treatise on astronomy.
    Ptolemy’s astronomical models were widely accepted by astronomers right up until they were disproved and changed by the work of copernicus in the mid 1500’s.
    The model could predict the position of planets within 2 degrees.
    The model placed the Earth in it’s natural place at the center of things (universe).