恒こう星せい間かん航こう行こうMeaningsNoun1. interstellar travelKanji used恒constant星star間interval航navigation行goComposed of恒こう星せいstarNoun間かんinterval; period of time; among; between; inter-; good opportunity; chance; estrangement; discord; alienation; …Noun航こう行こうcruise; navigation; sailingNoun