* Historically: Throughout history, different cultures have recognized and named constellations based on their own interpretations of the stars.
* Modern Recognition: The International Astronomical Union (IAU) officially recognizes 88 constellations, which cover the entire celestial sphere. These are standardized and used by astronomers worldwide.
* Informal Groups: There are many other star patterns people informally recognize, but these aren't officially recognized constellations.
So, the answer depends on what you consider a "constellation." If you're talking about officially recognized constellations, there are 88. However, the number of star patterns people see and name can be much larger.
