Romulus is a fictional planet and the homeworld of the Romulan species in the Star Trek universe. Located in the Beta Quadrant, Romulus is characterized by its reddish skies and rugged terrain. Romulans are a humanoid species descended from Vulcans who rejected logic and embraced emotion, leading to a schism and their exodus to establish their own empire. Romulan society is highly militaristic and secretive, often depicted as antagonists to the United Federation of Planets. The planet Romulus and its civilization have been central to many Star Trek storylines, exploring themes of war, diplomacy, and cultural identity.