What constellation does the Big Dipper belong to? Do you really know the Big Dipper?

The Milky Way Wan Li is printed in the sky, and the Seven Stars Beidou refers to Gan Kun;

Everyone should know the Big Dipper, the so-called spoon star, but do you really know the Big Dipper?

The Big Dipper consists of Shu Tian (greedy wolf), Tian Xuan (giant gate), Tianji (Lucun), Tian Quan (Wen Qu), Yuheng (Lian Zhen), Kaiyang (Wu Qu) and Yaoguang (Pojun). Shaped like a bucket, it is very close to the north celestial pole, hence the name Big Dipper.

Yuheng is the brightest, and its brightness is almost close to the first-class star; "Tianquan" is the darkest, it is a third-class star, and the rest are second-class stars.

Belongs to the constellation Ursa major, forming a butt to the tail of Ursa major.

Principle of pointing north

Because the earth rotates on its own axis, the position above the axis of rotation is the north pole of the earth in the northern hemisphere; Polaris is just above the axis of rotation, so if you find Polaris, you can find the north;

But Lang Lang's night sky is full of stars. Which one is Polaris? At this time, the big dipper with obvious connection signs will play a role; In the direction of cardamom, Polaris is five times the distance between Shu Tian and Tian Xuan. So when it comes to this friend in the southern hemisphere, there is no need to find the north through the Big Dipper, because at some latitudes, you can't see the Big Dipper at all, even if you see the Big Dipper, you can't find the North Star.

Beidou can not only point north, but also show the time and season.

In ancient times, people could record time by sundial during the day and judge the current time by the position of Beidou in the starry sky at night. It can refer not only to time, but also to seasons and changes of four seasons. Beidou points in different directions in the sky: bucket handle points to the east, and the world is spring; Guide to barrel handle, it's summer in the world; Bucket handle refers to the west, and the world is autumn; The barrel handle refers to the north, and it is winter all over the world.

China's record of the Big Dipper can be traced back to the pre-Qin period, when the Big Dipper was an indispensable symbol in people's night sky. In addition, Beidou has been endowed with various magical meanings and legends; The wisdom and imagination of the ancients are really convincing; It must have taken countless starry nights to sum up this theory (I will tell you all kinds of beautiful fantasy stories about the ancients and the starry sky when I have the opportunity);

The story of sixteen catties and the Big Dipper?

At first, the legend of 16 was related to the Big Dipper. Fan Li, an ancient tycoon, found that everyone's weight was only about the same when doing business, so he invented the scale and unified the standard. At first, thirteen Liang was a catty, which originated from the Big Dipper+Nandou Six Stars. However, it was later found that there were always profiteers who were short of Jin and Liang, so they launched Fu Lushou Samsung. The implication was that whoever was short of Jin and Liang was short of happiness and longevity, and if he was short of one or two, he was short of wealth and three or two. To restrain businesses from doing business, we finally decided on 16 kg.

future

In the vast universe, the Big Dipper is in constant motion. Five of the stars move in one direction at about the same speed, but Shu Tianhe and Yao Guang move in the opposite direction. So with the passage of time, about 654.38 million+years later, humans may not see the spoon shape of the Big Dipper now; Of course, if humans were still living on the earth at that time ~

Dragon Beidou Huaxia 5 thousand, forever rebuild Beidou East ~

Although the Big Dipper will disappear, it was built by China people themselves! In the future, it will be a brighter star for human beings! !