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Q1. What is a solar system?
The Sun and the eight planets (it was earlier nine) orbiting the Sun is called so.The system is believed to have formed about 4600 million years ago.

Q2. What is the compostion of the solar system?
The Sun, eight planets and countless fragments of rocks and metal left overs called Asteroids form the system.
Q3. Which astronomer was the first to propound a helio-centric model of the solar system?
Q4. What is the diameter of the solar system?
1170 crore kilometers.
Q5. What is the speed at which the solar system revolves around the Milky Way Galaxy?
285 Kms per second.
Q6. How many years does the solar system take to complete one revolution?
Completes one revolution in 224% of 10 to the power of 6 light years.
Q7. What is the shape of the orbit of the solar system around the gallictic centre?
Q8. What is Deep Space?
Space beyond the boundaris of solar system.
Q9. What is a Gallactic Year?
The period of time the solar system requires to orbit once around the Milky Way Galaxy . It is estimated to be between 225-250 million terrestrial (Earth)years.