Here's why:

* Constellations are patterns: Constellations are simply patterns of stars that appear close together in the night sky from our perspective on Earth. They are not physical groupings of stars that are close to each other in space.

* Stars have different temperatures: The stars that make up a constellation are individual stars with their own unique temperatures, which vary based on factors like their size, age, and composition.

* Distance: The stars in a constellation are often incredibly far apart, and their distances from Earth vary greatly. This makes it impossible to talk about a single temperature for an entire constellation.

Think of it this way: You could draw a constellation in the sky using a flashlight, but that doesn't mean the flashlight has a specific temperature. The same applies to constellations.