| 31. | It was the belief in the geocentric reality of the observable world, unchanging and immobile.
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| 32. | Unlike Akari, which had a geocentric orbit, SPICA will be located at Sun Earth.
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| 33. | More technically, it is the mean semi-major axis of the geocentric lunar orbit.
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| 34. | The Geocentric model was developed primarily by Greek philosopher Aristotle and Greco-Egyptian astronomer Ptolemy.
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| 35. | Geocentric theory presumes the two inner planets to be closer to the Earth than the Sun.
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| 36. | Ancient Greek, ancient Roman and medieval philosophers usually combined the geocentric model with a spherical Earth.
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| 37. | The lack of any observable parallax was considered a fatal flaw in any non-geocentric theory.
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| 38. | While maintaining the physical reality of the geocentric model, he criticized elements of the Ptolemic models.
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| 39. | In these geocentric models the stars and planets are carried around the Earth on spheres or circles.
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| 40. | The name is an analogue to the term " geocentric orbit " for an orbit around Earth.
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