1. A light year is equal to 9.50 Million kilometers.
2. The temperature of Sun’s center is 15 million C and the temperature of outer surface of sun is 5500 to 6000 C.
3. According to new scientific research that water is present on the surface of Mars except earth planet.
4. Neptune’s orbit around the sun takes about 165 years.
5. Elliptical path is the name of path of the sun amongst the stars in our galaxy.

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