5 1 50 Roy P. Sitepu Editor hadiyansyah Editor Michael Tobing Editor Rohmat Haryadi, S.Si Primary Author Henry Raymond Editor mixed material 9789790334717 Jakarta Erlangga 2008 Ensiklopedia_Astronomi_Sejarah_Astronomi.jpg.jpg Roy P. Sitepu Editor hadiyansyah Editor Michael Tobing Editor Rohmat Haryadi, S.Si Primary Author Henry Raymond Editor mixed material 9789790334724 Jakarta Erlangga 2008 Ensiklopedia_Astronomi_Planet.jpg.jpg Roy P. Sitepu Editor hadiyansyah Editor Michael Tobing Editor Rohmat Haryadi, S.Si Primary Author Henry Raymond Editor mixed material 9789790334731 Jakarta Erlangga 2008 Ensiklopedia_Astronomi_Satelit_Asteroid_Dan_Komet.jpg.jpg Roy P. Sitepu Editor hadiyansyah Editor Michael Tobing Editor Rohmat Haryadi, S.Si Primary Author Henry Raymond Editor mixed material 9789790334748 Jakarta Erlangga 2008 Ensiklopedia_Astronomi_Matahari_Dan_Bintang.jpg.jpg Roy P. Sitepu Editor hadiyansyah Editor Michael Tobing Editor Rohmat Haryadi, S.Si Primary Author Henry Raymond Editor mixed material 9789790334755 Jakarta Erlangga 2008 Ensiklopedia_Astronomi_Galaksi.jpg.jpg