What do we call a recognized group of stars that form a particular pattern in the night sky?

A recognized group of stars that form a particular pattern in the night sky is known as a constellation. Constellations are essentially imaginary lines drawn between stars that create shapes or figures, often named after mythological figures, animals, or objects. Each constellation serves as a way to categorize and navigate the vast expanse of the night sky, aiding astronomers and stargazers in locating specific stars and celestial objects.

Galaxies, on the other hand, are vast collections of stars, gas, dust, and dark matter held together by gravity, encompassing billions of stars within immense distances, and are not limited to specific patterns visible from Earth. The asteroid belt refers to a region of space between the orbits of Mars and Jupiter filled with small rocky bodies, which are unrelated to the star patterns in the night sky. Clusters refer to groups of stars or galaxies bound by gravity, often too dispersed to form recognizable patterns like those of constellations.

Thus, the term "constellation" specifically captures the essence of a star group forming a discernible pattern, making it the correct answer.