„planetesimal hypothesis“: noun planetesimal hypothesisnoun | Substantiv s Overview of all translations (For more details, click/tap on the translation) Planetesimalhypothese Planetesimalhypothesefeminine | Femininum f (Lehre vom Wachsen der Planeten durch Anziehung kleiner Weltraumkörper) planetesimal hypothesis astronomy | AstronomieASTRON planetesimal hypothesis astronomy | AstronomieASTRON