Where is Polaris? How can I find it? First, we need to find the Big Dipper.

Tonight, let's use the Big Dipper in Ursa Major to find the North Star in the night sky. All the stars in the northern hemisphere revolve around this star (in fact, this is just a movement that seems to be caused by the rotation of the earth). This is because this star is almost directly above the north axis of the earth. In the past, vagrants in the north of the earth used Polaris to keep their course.

If you find it, you can also look for the trace of Wei Zi Right Wall No.1, also known as the right fulcrum, α(Thuban, the famous former Polaris of Tianlong).

So, how to find Polaris? Please look at the chart at the top of the article. All you have to do is connect a straight line between the polar star Shu Tian and Aquila of the Big Dipper, and extend the distance by five times, and you will meet this bright Polaris, that is, Polaris. No matter how the northern horizon of the Big Dipper is oriented, you can also use this convenient technology to find beautiful images of Polaris at any night.

If the sky in your area is dark enough, you can find the North Star through the Big Dipper. Polaris is not as bright as the Big Dipper. It needs a dark environment to see it. The pictures below are Ursa Major, Ursa Minor and Polaris. You can see them in the northern night sky in July. Polaris is located in Ursa minor, at the end of the handle of Little Beidou. In other words, Little Beidou is not a complete constellation, it is only an obvious part of Ursa minor.

Polaris is not the brightest star in the sky as most people know, and its brightness can probably rank in the top 50 of the whole day. However, as long as the weather is clear and there is no light pollution, Polaris is bright enough for us to see it.

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The Big Dipper in the evening of July, please remember clearly that Polaris is a star at the end of Ursa minor. You can also see the alpha star of Draco between Ursa Major and Ursa Minor.

How to find Alpha Dragon and its Dragon? As night falls, the Big Dipper gradually comes into our sight. If there is no light pollution in your area, you can try to find a winding star stream between Ursa Major and Ursa Minor. This winding star pattern is Draco.

Draco Alpha Star is a star in Draco Star, the tail of Draco Star in legend, and the part where Draco Star is fixed in the North Pole. 3000 years ago, Polaris was the alpha star of Draco, so Draco revolved around this star. ) I always look for Draco in Ursa Major and Ursa Minor.

Draco is well known because it was the Polaris 3000 years ago. At that time, the Egyptian Pharaoh had just built the pyramids. It is said that pyramid of khufu's passage points to Alpha Dragon, which means people noticed it at that time.

Summary: We can find the North Star through the Big Dipper. If there is no light pollution in your area, you can try to find the constellation Draco where Alpha is located.

Celestial coordinate system is a coordinate system used in astronomy to describe the position of celestial bodies on the celestial sphere. There are many different coordinate systems that are projected on the celestial sphere with spherical coordinates, similar to the geographical coordinate system used on the earth's surface. The difference between these coordinate systems is only used to divide the sky into two great circles with equal hemispheres, that is, the base surfaces are different. For example, the geographical coordinate system is based on the equator of the earth. Each coordinate system is named according to its selected base surface.

reference data

1.WJ encyclopedia

2. Astronomical terminology

3.earthsky

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