The song "Outer Space" by John Grant revolves around a person's fascination and intrigue with someone they have never encountered before. The lyrics describe the narrator's confusion because they have never seen anything like the person they are looking at. They seek help from their friend, who happens to be an astronomer, but even he cannot provide any answers. The narrator believes that the person they are observing must be from outer space or another dimension beyond the stars. The individual's presence and actions are otherworldly, capable of opening up new realms and possibilities for the narrator with just one smile. The narrator is mesmerized by the mysterious sounds coming from this person's mouth, as if they speak a language from a different galaxy. Overall, the song explores themes of wonder, curiosity, and the idea that there may be extraordinary beings or experiences beyond our understanding. It captures the sense of awe and fascination one can feel when encountering something or someone truly unique and unexplainable.