How Did the Pegasus Constellation Get Its Name?


The Pegasus constellation is one of the most recognizable and prominent features of the night sky. It is named after Pegasus, the winged horse of Greek mythology. But how did this celestial figure get its name? Let’s dive into the fascinating history behind the naming of the Pegasus constellation.

The Myth of Pegasus

In Greek mythology, Pegasus was a winged horse that sprang from the neck of the beheaded Gorgon Medusa. According to the myth, the hero Perseus was sent to kill Medusa, and with the help of Athena and Hermes, he managed to slay her by looking at her reflection in his shield. As he beheaded her, Pegasus sprang forth from her neck, born from the blood that spilled onto the ground.

The hero Bellerophon later captured Pegasus and rode him into battle against the monstrous Chimera. Together, they defeated the beast and became legendary figures in Greek mythology.

The Discovery of the Pegasus Constellation

The Pegasus constellation was first documented by the Greek astronomer Ptolemy in the 2nd century. He cataloged it as one of the 48 constellations known at the time, giving it the name Pegasus.

The Pegasus constellation can be found in the northern hemisphere, situated between the constellations of Andromeda and Cygnus. It is recognizable by its distinctive square shape, which forms the body of the winged horse.

The Significance of Pegasus in Astronomy

The Pegasus constellation is home to a number of interesting celestial objects. One of the most notable is the globular cluster Messier 15, which contains over 100,000 stars and is one of the oldest known globular clusters.

Pegasus is also home to a number of galaxies, including the Pegasus Dwarf Irregular Galaxy, the Pegasus Dwarf Spheroidal Galaxy, and the NGC 7742 Spiral Galaxy. These galaxies have provided astronomers with valuable insights into the structure and evolution of the universe.


The naming of the Pegasus constellation is a testament to the enduring influence of Greek mythology on our culture and society. From its origins as a legendary figure to its prominent place in the night sky, Pegasus continues to captivate and inspire people around the world.