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1. How many planets are there in our solar system?

2. Who is the father of solar system?

5. How many satellites are there in our solar system?

6. Which of the eight planets called inner planet?

7. Which four planets are outer planets?

8. What does jovian mean?

10. What is a celestial body called?

11. What is the natural satellite of earth?

12. Who says that, the earth and the moon was originally single body?

13. When did georgedarwin stated that the earth and the moon were a single moving body?

14. Who is the big splat?

16. What is the experiment called density, light and heavy?