''List name of universe''

1. Galaxies in the first one billion years after the Big Bang the first galaxies formed. The galaxies are made up of dust gas planets, and billions of stars.
2. The Solar System about nine billion years after the Big Bang the solar system containing our Earth appeared.
3. Theories are explanations of natural events that are made after looking at the evidence. A theory can never be completely proved however, more evidence can be gathered to support the theory so that it becomes the best explanation we have.
4. Star Birth the force of gravity pulls the dust and gas together in clouds called nebulae. In addition, the material condenses to temperature rises and it begins to shine. A star has been born.
5. Color massive stars are blue-white in color. In addition, less massive stars are a pale red color because their temperature is lower. Smell stars called red dwarfs are the most common type of star in the universe.
6. Red Giant near the end of their lives all stars, become red giants. They become bigger and their temperature drops. In addition, like all stars less massive stars become red giant. Their size increase and their temperature of drops.
7. Nebula at the end of its life the gases near the surface of the star start to drift off to form a cloud a planetary nebula.
8. Neutron Star a supernova may leave behind a small dense body called a neutron star.
9. Four thousand the number of stars that can be seen by the naked eyes. One hundred twenty-five billion an estimate of the number of galaxies in the visible universe. There may be many more. 4.5 billion years the age of the sun.
10. Stars are made of shinning gas which gives off light and heat the hottest stars are a blue white color while the coolest are orange yellow or red.
11. Planets are sphere shaped bodies that do not give off their own light. They orbit stars.