Constellations are amazing. If you travel all over the world, it is possible to see every constellation there is. Constellations can also help people find their way at night with Polaris, the North Star.
Constellations have a very interesting history.
In ancient times, Greeks and Romans saw groups of stars in the northern two-thirds of the sky. The groups they saw became constellations. They named the constellations after mythological creatures and animals. Later, in the 1400s through 1700s, explorers saw new constellations in the southernmost third of the sky. They named these new constellations after scientific instruments, as well as animals.