Astronomy is a core class and subject taught at Hogwarts School of Witchcraft and Wizardry and the constellation decoration on the mug incorporates names and mascots of the four school houses the Gryffindor lion
The Slytherin serpent
The Ravenclaw eagle
And the Hufflepuff badger
The front of the mug is decorated with a golden Hogwarts decal and the wrap-around marble effect background provides the perfect finishing touch