宇宙[uchuu] universe
宇宙ステーション[uchuusuteeshon] space station
宇宙学[uchuugaku] cosmology
宇宙基地[uchuukichi] space station
宇宙空間[uchuukuukan] outer space

宇宙食[uchuushoku] space food
宇宙人[uchuujin] space alien
宇宙線[uchuusen] cosmic ray
宇宙船[uchuusen] space ship
宇宙大爆発[uchuudaibakuhatsu] Big Bang (theory)

運航[unkou] operating (e.g. ships, aircraft)
えい航[eikou] towing (a ship)
英国航空[eikokukoukuu] British Airways
往航[oukou] outward voyage
廻航[kaikou] navigation

寄航[kikou] stopping at a port
休航[kyuukou] suspension of sailings
近接航空支援[kinsetsukoukuushien] close air support
欠航[kekkou] flight cancellation
航宇[kouu] aerospace