Red Rectangle Nebula

planetary nebula

en-GB/ˈɹɛd ˈɹɛktæŋɡl ˈnɛbjʊlə/
en-US/ˈɹɛd ˈɹɛktæŋɡəl ˈnɛbjələ/

分类：

planetary nebuladouble starstarvariable starpost-AGB star