How long is the baseline in measuring stellar parallax?
300 million kilometer the distance Earth travels around Sun in one year
travels 300 million kilometers annually. If viewed from Earth, this could be used as a baseline. Image credit: ntf csirro au.
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The difference between Earth's position in January and July, or roughly 300 million kilometers, serves as the baseline for measuring stellar parallax.
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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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