Question
What are circumpolar stars? Are more stars circumpolar at the North Pole or in the United States? Explain.
Step 1
These stars appear to move in a circular path around the pole, and their visibility depends on the observer's latitude. At the North Pole, all stars are circumpolar because the observer is at the highest possible latitude (90 degrees North). This means that the Show more…
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Explain why more stars are circumpolar for observers at higher latitudes.
The southernmost star in a group of stars known as the Southern Cross lies approximately $65^{\circ}$ south of the celestial equator. What is the farthest-north latitude for which the entire Southern Cross is visible? Can it be seen in any U.S. states? If so, which ones?
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