The Cetus constellation group is a collection of constellations that includes the prominent Cetus, known as the Whale. This constellation is located in the southern sky and is one of the largest in the night sky. It is easily recognizable due to its distinctive shape and contains several notable stars, including Diphda, the brightest star in the group. Cetus is also home to various deep-sky objects, such as the Cetus A galaxy and the Messier 77 galaxy. The constellation has been associated with various myths and legends throughout history, often representing a sea monster in ancient cultures.