Posted in Geography, Our Solar System

Our Solar System : Milky Way

1. The Milky Way is the galaxy which contains our – Solar System

2. The name milky is derived from the Greek word – Galaxia

3. The Milky Way consists of a bar-shaped core region surrounded by – a disk of gas, dust and stars

4. The Milky Way Age is – 13.2 billion years

5. The oldest star in the Galaxy is – HD 140283

6. The Milky Way as a whole is moving through space at a rate of approximately – 600 km per second

7. If the Milky Way were reduced in diameter to a width of – 100 m, the solar system would be no more than 1 mm in width

8. Inside the Milky Way are at least – 100 billion planets

9. The Milky Way and the Andromeda Galaxy are part of a – binary system of giant spiral galaxies

10. The Milky Way can be seen as a hazy band of white lights – some 30 degrees wide arcing across the sky

11. The Galaxy has a relatively low surface – brightness

12. The center of the Milky Way lies in the direction of the constellation – Sagittarius

13. The Milky Way is the second largest galaxy in the – Local Group

14. The central bulge of the Milky Way is about – 10,000 light years thick

15. The sun, Earth, and the rest of the solar system are located about – 27,000 light years away from the Milky Way’s


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