Cithakan:DinaIkiIngSejarah/18 AgustusFrom Wikipedia, the free encyclopedia Pierre Janssen 1868 - Pierre Janssen manggih hèlium. 1877 - Asaph Hall manggih Phobos, bulan paling ageng saking Mars. 1945 - Undhang-Undhang Dhasar Negara Republik Indonesia dipunsahaken wonten ing salebeting sidang BPUPKI.
Pierre Janssen 1868 - Pierre Janssen manggih hèlium. 1877 - Asaph Hall manggih Phobos, bulan paling ageng saking Mars. 1945 - Undhang-Undhang Dhasar Negara Republik Indonesia dipunsahaken wonten ing salebeting sidang BPUPKI.