恒星こうせい Common Noun English jmdict 1 noun (common) (futsuumeishi) astronomy star 惑星は恒星の周りを回る。 Planets move around a fixed star.
恒星天こうせいてん Noun English jmdict 1 noun (common) (futsuumeishi) sphere of fixed stars (in the Ptolemaic system)
Shirabe