A History of the Solar System Model
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My Class Project
The search for truth has motivated humanity since our beginning. While our methodology has been refined with time, it is rewarding to remind ourselves of our first attempts at understanding the systems around us. The movement of the celestial bodies offers a compelling anthology of this progression in science. Early humanity’s desire to catalogue astronomical phenomena is apparent in the lunar calendar markings left over 34,000 years ago(Dishough). In my project, I wish to present a far-from-complete timeline of solar system models in western culture. I chose to focus on the designs I considered to be historically important, with addendums of major discoveries that altered the model.

Timeline Pieces
The complete timeline:
Anaximander of Miletus
611 - 546 BC
The first model of the solar system.
Features Earth (not known to be a sphere at the time)
Large Iron sphere and ring of fire.

Philolaus of Samos
470 -359 BC
Second model of the solar system.
Central fire (always opposite of inhabited side of Earth so humans would never see it)
Counter Earth, also never visible.

Aristotle of Greece
384 - 322 BC
the third model of the solar system

Continuation of time line:
Next three:
Aristarchus of Samos
310 - 230 BC
the fourth model if the solar system
Heliocentric
Mostly lost in Burning of Library

Ptolmey
90 - 168 AD
The longest lasting model to date (number one model for nearly 1,800)

Copernicus
1473 - 1543 AD
Reestablished heliocentric model

Continuation:
The next three models
Fredrick W. Herschel
1738 - 1822 AD
​
Addition of Uranus (not named until 1850)

Adams, Le Verrier & Galle
September 23, 1846
Addition of Neptune: the planet discovered with Math

Clyde Tombaugh
February 18 1930
The addition of Pluto to the model
