Ma'anar ƙamus na "tashar sararin samaniya" wani babban tauraron ɗan adam ne ko jirgin sama da ke kewaya duniya ko wata duniyar, wanda 'yan sama jannati ko wasu matafiya suka yi su na tsawon lokaci. Tashoshin sararin samaniya suna zama tushen bincike na kimiyya, binciken sararin samaniya, da sauran ayyukan da suka shafi jirgin sama. Yawanci sun haɗa da wuraren zama, dakunan gwaje-gwaje, tsarin sadarwa, da sauran kayan aiki masu mahimmanci don tallafawa rayuwar ɗan adam a sararin samaniya. Misalan tashoshin sararin samaniya sun hada da tashar sararin samaniya ta kasa da kasa (ISS) da tashar Tiangong ta kasar Sin.