Is there a certain number of stars in the constellation?

1. Constellation is a relative division, which was mainly used for naked eye observation to facilitate people's identification and memory. It is still used for the convenience of popular science, but professional astronomers generally use celestial coordinates, which can locate it relatively accurately. At present, there are 88 constellations in common use in the world, but China, Arabs and Indians all have their own constellations, and they generally inherit the tradition.

2. The depth of the celestial sphere needs to be determined by relevant astronomical observation equipment, and the unit is light years and parsec.

At present, it is impossible to determine the center of the universe. It is generally believed that the Capricorn cosmic hole is the center of our galaxy, and our Virgo supercluster is on the edge of this hole. The distance from the earth to this center is 200 million parsec, which is close at hand.

At present, the deepest place we can see is about 654.38+037 billion light years (the latest data from NASA).