When was the constellation theory first put forward?

To say that the constellations used in astronomy now have to be traced back to 5,000 years ago.

A few years ago. Gadi, who lives in Mesopotamia.

Asians live a shepherd's life and look at the stars every night to move people.

Do things together.

By the second century BC, Alexander's outstanding astronomer,

Ptolemy added what astronomers had recorded before and other supplements.

Data, sorting out 48 constellations, namely "Ptolemy" 48 stars.

Block, has continued to this day. These constellations were used in Europe until15th century.

With the arrival of the era of great navigation, Ptolemy constellation arrived in the southern hemisphere.

That's not enough. /kloc-After 0/6th century, there began to be many astronomers.

Add a constellation. As a result, the constellation is chaotic and even out of control.

Situation.

1930, the international astronomical union held a meeting and decided

We must divide the whole day into 88 constellations, which is what we use now.

Points.