Where are the stars visible all year?

In space, outside our atmosphere, the stars are always visible. The reason you can't see the stars all the time here on Earth is because our atmosphere scatters the sunlight so that the entire sky appears bright.

But you can see stars - at least one or two - in plain daylight many places on Earth as well. At the bottom of a well, or in a dark cave with a small opening to the sky, the scattered light will be absorbed, while the direct light of a star can be seen.

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Stars are visible all year (but of course only at night) in the torrid or temperate zones; anywhere on earth between the Arctic Circle and the Antarctic circle. Within those circles there will be at least a short period of days without sunset.