* Historically: Different cultures throughout history have recognized and named their own constellations. These can vary greatly from one culture to another.
* Modern vs. Ancient: The International Astronomical Union (IAU) officially recognizes 88 constellations. This system is based on the ancient Greek constellations, but some of them have been redefined or combined over time.
* Subdivisions: Within the 88 constellations, there are also smaller star patterns or asterisms that have been identified and named. These are not considered official constellations, but are often discussed in astronomy.
So, while there are 88 officially recognized constellations by the IAU, it's important to remember that there are many other constellations that have been recognized throughout history and by different cultures.
