Whose heliocentric model is seen as the first step in the development of modern models of the solar system?

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Apr 30, 2016

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The heliocentricity observation is dated back to two millenniums ago, in the works of Aristarchus (3C BCE) and of Selucius (2C BCE). Copernicus (16C AD) made a heliocentric model..

Explanation:

16th century Copernicus was the first to make a heliocentric model with Earth circling Sun, very fast, and stars moving around, very slowly.

Foe graphic description of the model and more details:
http://universetoday.com/33113/heliocentric-model.

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