How is stellar parallax related to the Greeks and the discrediting of the geocentric model?

Answer 1

Greeks didn't have instruments to prove or to discredit the geocentric model by using the stellar parallax.

The inability of the ancient Greeks to observe stellar parallax contributed to their acceptance of the geocentric model. They correctly inferred that if the Earth revolved around the Sun, then the stars would exhibit parallax throughout the year. However, they were ignorant of the incredibly large distances that separate us from the other stars, distances so great that parallax cannot be seen with the unaided eye and would require the use of telescopes.

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Answer 2

Stellar parallax was not observed by the Greeks. It became relevant in the 19th century when astronomers used it to measure stellar distances, supporting the heliocentric model proposed by Copernicus and discrediting the geocentric model.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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