When can Polaris be seen?

In fact, the brightness of Polaris has basically reached the resolution limit of human eyes in ordinary weather at night in cities, which is why many people read popular science books and know Polaris when they were young, but they can't find it in the northern sky. It is difficult to find Polaris directly unless it is sunny at night.

Today's Polaris is a bright star named Dog, and its western name is Dog Eye. This star is located at the tip of the bear's tail in Ursa minor. In English, Cynosure also means center of attraction, which means that the stars revolve around the hook.

Polaris is a bright star in the northern part of the sky, close to the north celestial pole and almost opposite the earth axis. Seen from the northern hemisphere of the earth, its position is almost unchanged, so it can be used to identify the direction.

Extended data:

Name source:

About 15000 to 13000 years ago, Polaris was named Vega because of Yan Zi Shi's Weaver Girl, which originated from the natural worship of ancient stars by ancient Han people. Therefore, it is named Polaris.

Main uses:

Polaris is a very important indicator of field activities and ancient navigation direction, and it is also a constellation that can tell the direction from small to stargazing to large to astrophotography, and the equatorial observatory in the observation room accurately locates it. Because Polaris is closest to true north, people on earth have been navigating by its starlight for thousands of years.

Baidu encyclopedia-Polaris