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The Sun

1. The sun lies at the heart of the – solar system, where it is by far the largest object.

2. The sun is one of more than 100 billion stars in the – Milky Way.

3. The sun was born about – 4.6 billion years ago.

4. The sun contains more than – 99.8% of the total mass of the Solar System.

5. Diameter – 1,390,000 km.

6. Mass – 1.989e30 kg

7. Temperature – 5800 K

8. The Sun is, at present, about – 70% hydrogen and 28% helium by mass everything else (“metals”) amounts to less than 2%.

9. Each second about 700,000,000 tons of hydrogen is converted to about 695,000,000 tons of helium and 5,000,000 tons of energy in the form of – gamma rays.

10. The closest planet to the Sun – Mercury

11. The farthest planet from the Sun – Neptune

12. Sun is more than 13 million times greater than – Earth

13. How much time takes by Sunlight to reach the Earth – 8 minutes and 20 seconds

14. The sun rises first in the country – Japan

15. In which country sun rises at midnight – Norway

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