April 15, 2020
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History of Cosmology
⟶ Updated 1 months ago ⟶
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Aristotle describes his geocentric model of the universe
Aristarchus proposes a heliocentric model of the universe, but is widely ignored.
Ptolemy improves upon the geocentric model to account for retrograde planetary movements
Ferdinand Magellan is the first European to observe the Magellanic Clouds, later recognised as galaxies beyond ours.
Nicholas Copernicus publishes a paper that presents an improved heliocentric model from Aristarchus' version.
Giordano Bruno burnt at stake for promoting heliocentric model
Kepler publishes a paper explaining the movement of planets with a heliocentric model and elliptical orbits.
Galileo Galilei observes the moons of Jupiter
Galileo publishes a paper arguing in favour of the heliocentric model
Isaac Newton publishes Principia Mathematica which explains his theory of gravity.
Thomas Wright suggests that the Milky Way is a flattened disk of stars and that nebulae might be other galaxies.
William Herschel discovers Uranus
William Herschel constructs the first map of the Milky Way galaxy
Friedrich bassel observes stellar parallax.
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