| 1. | heliocentric model ( the sun is at the centre ).
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| 2. | It introduced the main theoretical concepts of geocentric astronomy and references the heliocentric model.
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| 3. | The geocentric model was eventually replaced by the heliocentric model.
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| 4. | Aristarchus of Samos proposed a heliocentric model as an alternative view in Ancient Greece.
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| 5. | Contrary to the Copernican heliocentric model of the Universe.
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| 6. | But the East had no need of heliocentric models of the universe, said King of Frankfurt.
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| 7. | In 1543, Nicolaus Copernicus published a heliocentric model in his work " De revolutionibus orbium coelestium ".
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| 8. | This observation strongly supported the heliocentric model.
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| 9. | For example, the heliocentric model of the solar system originally had all the planets in circular orbits.
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| 10. | The theory of gravity allowed scientists to construct a plausible heliocentric model for the solar system quickly.
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