The position of constellations in the universe

Where are the constellations in the universe?

Constellation was originally a method to divide the celestial sphere for the convenience of marking the positions of the stars on the celestial sphere (that is, the apparent positions). Very different from the actual position of stars in the universe,

There are many stars in the celestial sphere that are very close to each other, but they are far apart.

There are many more in turn.