If we use physics to explain it, it is a comparison. For example, if we fix the four directions of southeast, west and north, then the position coordinates of many objects will be very clear, just like the sun rising from the east.

text/Walking in the world

Why did the ancients use the North Star to point out the direction? You should know that the North Star does not belong to

. What is the direction? If we use physics to explain it, it is a comparison. For example, if we fix the four directions of southeast, west and north, then the position coordinates of many objects will be very clear, just like the sun rising from the east. In fact, when we sail on the sea, there is almost no sign of the direction that can be used as a direction, but just look at the place where the sun rises and lands, you will know where it is currently and in that direction?

But what is strange is why the ancients used the North Star to point out the direction when they went out? Before the compass was invented, people often distinguished the celestial phenomena to observe the direction and weather. Among them, Polaris is a very unique symbol. But you should know that Polaris does not belong to the solar system, and Polaris went to Earth for 434 light years, which is nearly 200 times the diameter of the solar system. According to common sense, it is very difficult for people to see this Polaris. Is this Polaris a star?

In fact, the North Star is indeed a star, but after being used to being called by people, it looks like a bright and bright star in the starry sky at night, and is given many other meanings by people. But it is precisely because it is a star. At night, even if it is very far away from us, it is also recognized by humans. As for pointing out the direction, it is actually easy to understand. If this star is also in the solar system and revolves around the sun like the earth, then we on the earth will not be able to use this star as a reference, and we will also not know our location!

Polaris is a star, and it also moves, not in place, but because it is too far from us humans, even if we walk thousands of kilometers in a day, humans cannot discover it at all. However, over the past few thousand years, the coordinates of Polaris have changed. However, even so, it does not prevent humans from taking it as a reference. I wonder if you have seen this asteroid in the clear night sky?