Where is Polaris?

Polaris points to the north end of the earth's rotation axis, which is in the north in the northern hemisphere (invisible in the southern hemisphere). Due to the rotation of the earth. It seems that all the stars in the sky are turning. But because the axis of rotation points to the north star. It seems that Polaris does not turn, and all the other stars revolve around Polaris.

Polaris, also known as Beichen and Zixing, refers to the star closest to the North Celestial Pole. At present, it refers to "Gou Chen Yi". Whether in the northern hemisphere or the southern hemisphere, it is always in the north of the earth. Because it is in the north of the earth, people often use it to guide the way at night.

Polaris is located at the northern end of the earth's axis, which is five times as long as the extension line connecting Tian Xuan and Shu Tian in the Big Dipper. Because the earth rotates and Polaris is on the axis of celestial rotation, it is still relative to other stars. Polaris is about 433 light years away from the earth and has a diameter of about 52 million kilometers.

Polaris is located at the northern end of the earth's axis, which is five times as long as the extension line connecting Tian Xuan and Shu Tian in the Big Dipper. You can find the Big Dipper first, and then find the North Star through the Big Dipper. The Big Dipper is a part of Ursa major. Graphically, the Big Dipper is located at the back and tail of Ursa Major.

Polaris is a very important directional indicator in ancient navigation and outdoor activities, ranging from stargazing to astrophotography, and it is also a directional constellation, so the precise positioning of the Equatorial Observatory in the observation room is very important.