In Haruki Murakami's novel "Sputnik Sweetheart," the protagonist reflects on the meaning of the word "Sputnik," which translates to "travelling companion" in Russian. This realization sparks a contemplative moment as the narrator considers the significance of the name given to the satellite.

The character's musings highlight the poetic nature of the name in contrast to the satellite's simplicity as a metallic object orbiting the Earth. This duality invites readers to think about connections and companionship, even in seemingly mundane things, underscoring a deeper existential theme in the story.