Today, I went to Museum df natural history.

 The universe was born about 15 billion years ago during the Big bang. About 4.6billion years ago, The earth was born.

 Outer space has many stars. There are Sun, Mercury, Veneus, Earth, Mars,  Jupiter, Saturn, Uranus, and Nepture. There was a pluto, but it got out of a Solar system. 

 There is four area. there are Precanbrian era, Paleozoic Era, Mesozoic Era, Cenozoic Era.

 Troodon is smart dinosaurs. Their Brain weighed between 37~45kg. Carnivore eat meat and has pointy teeth. Harnivore eat grass and has not pointy teeth. Elephants thrunk is made of numerous muscles. It works like human's hand. It helps them eat food and pull out grass. They also use it to water their bodies.