What stars are not in the constellation area?

It is said that people divide the starry sky into 88 constellations, that is, 88 regions. But the constellation is just a few stars connected together.

From this perspective, all the questions of the landlord are based on one point, that is, what is the constellation.

As can be seen from this sentence, the landlord's view that "the constellation is the connection of several stars" has caused the following doubts because of this inaccurate understanding.

What exactly is a constellation? It is an area on the celestial sphere, and the connection of several stars mentioned by the landlord is only that several bright stars in the constellation have developed certain graphics, in order to make the constellation more memorable.

Constellation is an area in the sky, not a connection of several stars.

There are so many stars in the sky, how can they represent all the stars?

If you understand the above views, it should be easy to understand.

For example, the celestial sphere is our earth, and then the land is divided into countries corresponding to the constellations on the celestial sphere.

What about the connection of constellations, like the railway between big cities? For cities without railways, it is not reconnection, but it does belong to a certain country. The big city in the example is the bright star of the connection, and the railway is the imaginary constellation connection.

But some constellations, such as Orion, are not closed figures at all. What about inside?

I believe the landlord himself realizes where the problem lies. Constellation is not a connection of several stars, but an area in the sky.

Back to the supplementary question:

This is not your problem, but mine. Real people can easily explain a complicated problem. It seems that I am still far behind.

The picture given by the landlord is a sketch of the starry sky in spring, and the stars above 4 are not marked. So you can't see it in that area. In fact, the point given by the landlord belongs to Ursa major, corresponding to the three star officials in ancient China.

Said something out of line.

Back to the landlord's question, maybe my ability is poor and it is difficult to explain it in words. Take a picture for the landlord to help explain.

The picture below is the star map of Andromeda. The landlord thinks that the constellation should be a connection of several bright stars, but it is actually a part of the gray area. So are other constellations.

/me? ct=5033 16480。 z = 0 & amptn = baiduimagedetail & ampword = % D0 % C7 % CD % BC+% B4 % F3 % D0 % DC % D7 % F9 & amp； in= 18967。 cl = 2 & amplm=- 1。 pn=5。 rn= 1。 di=8025463905。 ln= 1。 fr = & ampic=0。 s = 0 & ampse = 1 & amp； sme=0