In Seodaemun of Natural History, there were three floors. At first floor, it is about human and nature.For example problems of pollution, our forests, and rivers. I saw some fessil that living at precambrian Ear. Teacher explain that this fessil became human. At the second floor, it is about a period of how animals are evoluted. It shows a way how human use there hands and their backs got more straight. The last floor, it is about Earth and Solar system. our space are began with big explosion that called, Big Bang. This explosion made dusts and gases got together and made Earth. In solar system there were 9 planets, but Pluto got rid of them, so there are only 8 planets. Also, solar system can seperated to inner space and outer between Earth. Each Planet has each gravity, axis, revolute and rotate period. I was interested in science, so I was really happy to go there, and have a good time. I want to look around more and experience more things that I can do. I will miss ths time. Thank you.