1. 1. By: your name & ID goes here 1
2. 2. Appearance Size and composition Video Shows galaxy Structure and Formation Age 2
3. 3. The Milky Way has a relatively low surface brightness. Its visibility can be greatly reduced by background light such as light pollution or stray light from the moon. The light in this band originates from un-resolved stars and other material that lie within the Galactic plane 3
4. 4. The Milky Way contains at least 100 billion stars and may have up to 400 billion stars. The stellar disk of the Milky Way Galaxy is approximately 100,000 ly (31 kpc) in diameter. 4
5. 5. This Video shows a panoramic view for galaxy 5
6. 6. It consists of a bar- shaped core region surrounded by a disk of gas, dust and stars. The gas, dust and stars are organized in roughly logarithmic spiral arm structures. 6
7. 7. a star in the galactic halo was estimated to be about 13.2 billion years old. About 0.5 billion years less than the age of the universe. As the oldest known object in the Milky Way at that time 7
8. 8. This galaxy conations millions of stars The milky way galaxy is the most galaxy studied by space scientific specialist because it contain our plant. 8
9. 9. Web sites http://en.wikipedia.org/wiki/Milky_Way http://www.space.com/ 9