The group of stars that form shapes in the sky are called constellations.

Here's a little more about them:

* Constellations are patterns of stars that have been recognized and named by different cultures throughout history.

* They are not physically connected; the stars in a constellation are just at similar distances from Earth, making them appear close together in our sky.

* Different cultures have recognized different constellations, and some constellations are recognized by multiple cultures.

* Modern astronomers have divided the sky into 88 official constellations, which cover the entire celestial sphere.

Some famous examples of constellations include Ursa Major (the Great Bear), Orion (the Hunter), and Cassiopeia (the Queen).