Ancient Greek Constellations

Constellations are a collection of stars that form an imaginary shape at night in the sky. Most constellations were named by the Greeks after mythological creatures, people or characters. In the past creating imaginary images out of stars became useful for navigating at night and for keeping track of the seasons. The sky was divided up into 88 different constellations in 1922. This included 48 ancient constellations listed by the Greek astronomer Ptolemy as well as 40 new constellations.