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Stella Mortui (plural stellae mortui or sometimes stellae mortuorum) is the scientific name of a star that appears in the sky when a person dies. In English, it is also sometimes referred to as Star of the Dead. The properties of this star, such as size and distance from earth, may vary. Whether or not this depends on the personality of the deceased person, it still debated.

Stars of the Dead have been an object of research ever since about Simba lost his father Mufasa and found out where in the firmament his father's Stella Mortui was located by the visual appearance of his faith. It is said that this is the reason why people, after they lose their beloved, often look at the sky in the hope of seeing their close relatives again.