Dioola

Dioola is a fictional planet featured in the science fiction novel "Project Hail Mary" by Andy Weir. It is the home world of the Eridian species, a race of intelligent extraterrestrial beings. Dioola is described as a planet with a significantly different environment than Earth, characterized by its dense atmosphere and unique geological formations. The Eridians, who are native to Dioola, have evolved to thrive in these conditions. The novel depicts Dioola as a distant star system from which the Eridians are seeking assistance due to a catastrophic threat to their home world. The planet's ecosystem and the specific challenges faced by its inhabitants are integral to the plot of "Project Hail Mary," driving the narrative and the motivations of the alien characters. Dioola serves as a crucial element in establishing the stakes and the scope of the interstellar crisis presented in the book.