天てん体たい核かくMeaningsNoun1. nuclear astrophysicsKanji used天heaven体body核nucleusComposed of天てん体たいheavenly body; celestial body; astronomical objectNoun核かくstone (of a fruit); pit; pip; core (of an organization, team, etc.); nucleus; heart; nuclear weapons; nucleus (of an atom); nucleus (of a cell); condensation nucleus; …Noun