Today, I went to Seodaemun Museum Of Natural History and I learned many different kind of thing. there was dinosaur fossils and planets. the three countrys that has many dinosaur fossils are Korea,USA, and Argentina. the Earths birth has story. The big cliud and gases erupted,so Earth was formed. Inside of the Earth, there is core, mental, and crust. We live on crust. we cant live on core and mental because it is too hot. the Cyanobacteria lived ay Precanbrian Era. Cyanobacteria produce the oxygen. In solar system there are 8 planets. Our panet Earth has natural satellite, Moon. In Precambrian  Era, the continents were only one. but, when the time goes, it changed in to 5 continents, Aisa, Africa, America, Europe, Oceania. In conclusion, Iwant to go to Universe and see many planets and stars!